Part 1
# Inquiries into human faculty and its development ### By Galton, Francis
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INQUIRIES INTO HUMAN FACULTY AND ITS DEVELOPMENT
by
FRANCIS GALTON F-R-S
First issue of this Edition 1907
PREFACE TO THE SECOND EDITION
After some years had passed subsequent to the publication of this
## book in 1883, its publishers, Messrs. Macmillan, informed me that
the demand for it just, but only just warranted a revised issue. I shrank from the great trouble of bringing it up to date because it, or rather many of my memoirs out of which it was built up, had become starting-points for elaborate investigations both in England and in America, to which it would be difficult and very laborious to do justice in a brief compass. So the question of a Second Edition was then entirely dropped. Since that time the book has by no means ceased to live, for it continues to be quoted from and sought for, but is obtainable only with difficulty, and at much more than its original cost, at sales of second-hand books. Moreover, it became the starting point of that recent movement in favour of National Eugenics (see note p. 24 in first edition) which is recognised by the University of London, and has its home in University College.
Having received a proposal to republish the book in its present convenient and inexpensive form, I gladly accepted it, having first sought and received an obliging assurance from Messrs. Macmillan that they would waive all their claims to the contrary in my favour.
The following small changes are made in this edition. The illustrations are for the most part reduced in size to suit the smaller form of the volume, the lettering of the composites is rearranged, and the coloured illustration is reproduced as closely as circumstances permit. Two chapters are omitted, on "Theocratic Intervention" and on the "Objective Efficacy of Prayer." The earlier part of the latter was too much abbreviated from the original memoir in the _Fortnightly Review_, 1872, and gives, as I now perceive, a somewhat inexact impression of its object, which was to investigate certain views then thought orthodox, but which are growing obsolete. I could not reinsert these omissions now with advantage, unless considerable additions were made to the references, thus giving more appearance of personal controversy to the memoirs than is desirable. After all, the omission of these two chapters, in which I find nothing to recant, improves, as I am told, the general balance of the book. FRANCIS GALTON.
LIST OF WORKS.
The Teletype: a printing Electric Telegraph, 1850; The Narrative of an Explorer in Tropical South Africa, 1853, in "Minerva Library of Famous Books," 1889; Notes on Modern Geography (Cambridge Essays, 1855, etc.); Arts of Campaigning: an Inaugural Lecture delivered at Aldershot, 1855; The Art of Travel, or Shifts and Contrivances available in Wild Countries, 1855, 1856, 1860 (1859); fourth edition, recast and enlarged, 1867, 1872; Vacation Tourists and Notes on Travel, 1861, 1862, 1864; Meteorographica, or Methods of Mapping the Weather, 1863; Hereditary Genius: an Enquiry into its Laws and Consequences, 1869; English Men of Science: their Nature and Nurture, 1874; Address to the Anthropological Departments of the British Association (Plymouth, 1877); Generic Images: with Autotype Illustrations (from the Proceedings of the Royal Institution), 1879; Inquiries into Human Faculty and its Development, 1883; Record of Family Faculties, 1884; Natural Inheritance, 1889; Finger-Prints, 1892; Decipherments of Blurred Finger-Prints (supplementary chapters to former work), 1893; Finger-Print Directories, 1895; Introduction to Life of W. Cotton Oswell, 1900; Index to Achievements of Near Kinsfolk of some of the Fellows of the Royal Society, 1904; Eugenics: its Definition, Scope, and Aims (Sociological Society Papers, vols. I. and II.), 1905; Noteworthy Families (Modern Science); And many papers in the Proceedings of the Royal Society, Journals of the Geographical Society and the Anthropological Institute, the Reports of the British Association, the Philosophical Magazine, and Nature.
Galton also edited: Hints to Travellers, 1878; Life-History Album (British Medical Association), 1884, second edition, 1902; Biometrika (edited in consultation with F.G. and W.F.R. Weldon), 1901, etc.; and under his direction was designed a Descriptive List of Anthropometric Apparatus, etc., 1887.
LIST OF MEMOIRS.
The following Memoirs by the author have been freely made use of in the following pages:--
1863: The First Steps towards the Domestication of Animals (_Journal of Ethnological Society_); 1871: Gregariousness in Cattle and in Men (_Macmillan's Magazine_); 1872: Statistical Inquiries into the Efficacy of Prayer (_Fortnightly Review_); 1873: Relative Supplies from Town and Country Families to the Population of Future Generations (_Journal of Statistical Society_); Hereditary Improvement (_Fraser's Magazine_); Africa for the Chinese (_Times_, June 6); 1875: Statistics by Intercomparison (_Philosophical Magazine_); Twins, as a Criterion of the Relative Power of Nature and Nurture (_Fraser's Magazine_, and _Journal of Anthropological Institute_); 1876: Whistles for Determining the Upper Limits of Audible Sound (_S. Kensington Conferences_, in connection with the Loan Exhibition of Scientific Instruments, p. 61); 1877: Presidential Address to the Anthropological Department of the British Association at Plymouth (_Report of British Association_); 1878: Composite Portraits (_Nature_, May 23, and _Journal of Anthropological Institute_); 1879: Psychometric Experiments (_Nineteenth Century_, and _Brain_, part vi.); Generic Images (_Nineteenth Century; Proceedings of Royal Institution_, with plates); Geometric Mean in Vital and Social Statistics (_Proceedings of Royal Society_); 1880: Visualised Numerals (_Nature_, Jan. 15 and March 25, and _Journal of Anthropological Institute_); Mental Imagery (_Fortnightly Review; Mind_); 1881: Visions of Sane Persons (_Fortnightly Review_, and _Proceedings of Royal Institution_); Composite Portraiture (_Journal of Photographical Society of Great Britain_, June 24); 1882: Physiognomy of Phthisis (_Guy's Hospital Reports_, vol. xxv.); Photographic Chronicles from Childhood to Age (_Fortnightly Review_); The Anthropometric Laboratory (_Fortnightly Review_); 1883: Some Apparatus for Testing the Delicacy of the Muscular and other Senses (_Journal of Anthropological Institute_, 1883, etc.).
_Memoirs in Eugenics_.
1901: Huxley Lecture, Anthropological Institute (_Nature,_ Nov. 1901); Smithsonian Report for 1901 (_Washington_, p. 523); 1904: Eugenics, its Definition, Scope and Aims (Sociological Paper, vol. i., _Sociological Institute_); 1905: Restrictions in Marriage, Studies in National Eugenics, Eugenics as a Factor in Religion (Sociological Papers, vol. ii.); 1907: Herbert Spencer Lecture, University of Oxford, on Probability the Foundation of Eugenics.
The following books by the author have been referred or alluded to in the following pages:--
1853: Narrative of an Explorer in Tropical South-Western Africa (_Murray)_; 1854: Art of Travel (several subsequent editions, the last in 1872, _Murray_); 1869: Hereditary Genius, its Laws and Consequences (_Macmillan_); 1874: English Men of Science, their Nature and their Nurture (_Macmillan_).
CONTENTS
PREFACE TO THE SECOND EDITION
INTRODUCTION
Origin and object of book.
VARIETY OF HUMAN NATURE
Many varieties may each be good of its kind; advantage of variety; some peculiarities are, however, harmful.
FEATURES
Large number of elements in the human expression; of touches in a portrait; difficulty of measuring the separate features; or of selecting typical individuals; the typical English face; its change at different historical periods; colour of hair of modern English; caricatures.
COMPOSITE PORTRAITURE
(See Appendix for three Memoirs describing successive stages of the method).--Object and principle of the process; description of the plate--composites of medals; of family portraits; of the two sexes and of various ages; of Royal Engineers; the latter gives a clue to one direction in which the English race might be improved; of criminals; of the consumptive; ethnological application of the process.
BODILY QUALITIES
Anthropometric Committee; statistical anomalies in stature as dependent on age; town and rural population; athletic feats now and formerly; increase of stature of middle classes; large number of weakly persons; some appearances of weakness may be fallacious; a barrel and a wheel; definition of word "eugenic."
ENERGY
It is the attribute of high races; useful stimuli to activity; fleas, etc.; the preservation of the weakly as exercises for pity; that of foxes for sport.
SENSITIVITY
Sensation and pain; range and grades of sensation; idiots; men and women; the blind; reading by touch; sailors; paucity of words to express gradation.
SEQUENCE OF TEST WEIGHTS
(See also Appendix, p. 248).--Geometric series of weights; method of using them; the same principle is applicable to other senses; the tests only measure the state of faculties at time of trial; cautions in constructing the test weights; multiplicity of the usual perceptions.
WHISTLES FOR AUDIBILITY OF SHRILL NOTES
(See also Appendix, p. 252).--Construction of them; loss of power of hearing high notes as age advances; trials upon animals; sensitivity of cats to high notes; of small dogs and ponies.
ANTHROPOMETRIC REGISTERS
Want of anthropometric laboratories; of family records; opportunities in schools; Admiralty records of life of each seaman; family registers (see also 220); autotypes; medical value of ancestral life-histories (see also 220); of their importance to human eugenics.
UNCONSCIOUSNESS OF PECULIARITIES
Colour blindness usually unsuspected; unconsciousness of high intellectual gifts; of peculiarities of mental imagery; heredity of colour blindness in Quakers; Young and Dalton.
STATISTICAL METHODS
Objects of statistical science; constancy and continuity of statistical results; groups and sub-groups; augival or ogival curves; wide application of the ogival; method; example; first method of comparing two ogival groups; centesimal grades; example; second method of comparing ogival groups; statistical records easily made with a pricker.
CHARACTER
Caprice and coyness of females; its cause; observations of character at schools; varieties of likings and antipathies; horror of snakes is by no means universal; the horror of blood among cattle is variable.
CRIMINALS AND THE INSANE
Peculiarities of criminal character; some of them are normal and not morbid; their inheritance as in the Jukes family; epileptics and their nervous instability; insanity; religious rapture; strange views of the insane on individuality; their moody segregation; the religious discipline of celibacy, fasting and solitude (see also 125); large field of study among the insane and idiotic.
GREGARIOUS AND SLAVISH INSTINCTS
Most men shrink from responsibility; study of gregarious animals: especially of the cattle of the Damaras; fore-oxen to waggon teams; conditions of safety of herds; cow and young calf when approached by lions; the most effective size of herd; corresponding production of leaders; similarly as regards barbarian tribes and their leaders; power of tyranny vested in chiefs; political and religious persecutions; hence human servility; but society may flourish without servility; its corporate actions would then have statistical constancy; nations who are guided by successive orators, etc., must be inconstant; the romantic side of servility; free political life.
INTELLECTUAL DIFFERENCES
Reference to _Hereditary Genius_.
MENTAL IMAGERY
Purport of inquiry; circular of questions (see Appendix for this); the first answers were from scientific men, and were negative; those from persons in general society were quite the reverse; sources of my materials; they are mutually corroborative. Analysis of returns from 100 persons mostly of some eminence; extracts from replies of those in whom the visualising faculty is highest; those in whom it is mediocre; lowest; conformity between these and other sets of haphazard returns; octile, median, etc., values; visualisation of colour; some liability to exaggeration; blindfold chess-players; remarkable instances of visualisation; the faculty is not necessarily connected with keen sight or tendency to dream; comprehensive imagery; the faculty in different sexes and ages; is strongly hereditary; seems notable among the French; Bushmen; Eskimo; prehistoric men; admits of being educated; imagery usually fails in flexibility; special and generic images (see also Appendix); use of the faculty.
NUMBER-FORMS
General account of the peculiarity; mutually corroborative statements; personal evidence given at the Anthropological Institute; specimens of a few descriptions and illustrative woodcuts; great variety in the Forms; their early origin; directions in which they run; bold conceptions of children concerning height and depth; historical dates, months, etc.; alphabet; derivation of the Forms from the spoken names of numerals; fixity of the Form compared to that of the handwriting; of animals working in constant patterns; of track of eye when searching for lost objects; occasional origin from figures on clock; from various other sources; the non-decimal nomenclature of numerals; perplexity caused by it. Description of figures in Plate I.; Plate II.; Plate III.; Plate IV. Colours assigned to numerals (see 105); personal characters; sex; frequency with which the various numerals are used in the Talmud.
COLOUR ASSOCIATIONS
(Description of Plate IV. continued) Associations with numerals; with words and letters; illustrations by Dr. J. Key; the scheme of one seer unintelligible to other seers; mental music, etc.
VISIONARIES
Sane persons often see visions; the simpler kinds of visions; unconsciousness of seers, at first, of their peculiarity; subsequent dislike to speak about it; imagery connected with words; that of Mrs. Haweis; automatic changes in dark field of eye; my own experiences; those of Rev. G. Henslow; visions frequently unlike vivid visualisations; phantasmagoria; hallucinations; simile of a seal in a pond; dreams and partial sensitiveness of brain; hallucinations and illusions, their causes; "faces in the fire," etc.; sub-conscious picture-drawing; visions based on patched recollections; on blended recollections; hereditary seership; visions caused by fasting, etc.; by spiritual discipline (see also 47); star of Napoleon I.; hallucinations of great men; seers commoner at some periods than at others; reasons why.
NURTURE AND NATURE
Their effects are difficult to separate; the same character has many phases; Renaissance; changes owing merely to love of change; feminine fashions; periodical sequences of changed character in birds; the interaction of nurture and nature.
ASSOCIATIONS
Derived from experience; especially from childish recollections (see 141); abstract ideas; cumulative ideas, like composite portraits (see also Appendix, "Generic Images," p. 229); their resemblance even in details.
PSYCHOMETRIC EXPERIMENTS
Difficulty of watching the mind in operation; how it may be overcome; irksomeness of the process; tentative experiments; method used subsequently; the number of recurrent associations; memory; ages at which associations are formed; similarity of the associations in persons of the same country and class of society; different descriptions of associations, classified; their relative frequency; abstract ideas are slowly formed; multifariousness of sub-conscious operations.
ANTECHAMBER OF CONSCIOUSNESS
Act of thinking analysed; automatic mental work; fluency of words and of imagery; processes of literary composition; fluency of spiritual ideas; visionary races of men; morbid ideas of inspiration (see Enthusiasm).
EARLY SENTIMENTS
Accidents of education, religion, country, etc.; deaf-mutes and religious ritual; religion in its essentials; all religious teachers preach faith and instil prejudices; origin of the faculty of conscience; evolution is always behindhand; good men of various faiths; the fear of death; terror is easily taught; gregarious animals (see also 47); suspiciousness in the children of criminals; Dante and contemporary artists on the terrors of hell; aversion is easily taught, Eastern ideas of clean and unclean acts; the foregoing influences affect entire classes.
HISTORY OF TWINS
It supplies means of comparing the effects of nurture and nature; physiological signification of twinship; replies to a circular of inquiries; eighty cases of close resemblance between twins; the points in which their resemblance was closest; extracts from the replies; interchangeableness of likeness; cases of similar forms of insanity in both twins; their tastes and dispositions; causes of growing dissimilarity mainly referred to illness; partly to gradual development of latent elements of dissimilarity; effect of childish illnesses in permanently checking growth of head; parallel lives and deaths among twins; necessitarianism; twenty cases of great dissimilarity; extracts from the replies; evidence of slight exaggeration; education is almost powerless to diminish natural difference of character; simile of sticks floating down a brook; depth of impressions made in childhood; they are partly due to the ease with which parents and children understand one another; cuckoos forget the teachings of their foster-mothers.
DOMESTICATION OF ANIMALS
Alternative hypotheses of the prehistoric process of domestication; savages rear captive animals; instances in North America; South America; North Africa; Equatorial Africa; South Africa; Australia; New Guinea Group; Polynesia; ancient Syria. Sacred animals; menageries and shows in amphitheatres; instances in ancient Egypt; Assyria; Rome; Mexico; Peru; Syria and Greece. Domestication is only possible when the species has certain natural faculties, viz.--great hardiness; fondness for man; desire of comfort; usefulness to man; fertility; being easy to tend. Habitual selection of the tamest to breed from. Exceptions; summary.
THE OBSERVED ORDER OF EVENTS
Steady improvement in the birthright of successive generations; our ignorance of the origin and purport of all existence; of the outcome of life on this earth; of the conditions of consciousness; slow progress of evolution and its system of ruthless routine; man is the heir of long bygone ages; has great power in expediting the course of evolution; he might render its progress less slow and painful; does not yet understand that it may be his part to do so.
SELECTION AND RACE
Difference between the best specimens of a poor race and the mediocre ones of a high race; typical centres to which races tend to revert; delicacy of highly-bred animals; their diminished fertility; the misery of rigorous selection; it is preferable to replace poor races by better ones; strains of emigrant blood; of exiles.
INFLUENCE OF MAN UPON RACE
Conquest, migrations, etc.; sentiment against extinguishing races; is partly unreasonable; the so-called "aborigines"; on the variety and number of different races inhabiting the same country; as in Spain; history of the Moors; Gypsies; the races in Damara Land; their recent changes; races in Siberia; Africa; America; West Indies; Australia and New Zealand; wide diffusion of Arabs and Chinese; power of man to shape future humanity.
POPULATION
Over-population; Malthus--the danger of applying his prudential check; his originality; his phrase of misery check is in many cases too severe; decaying races and the cause of decay.
EARLY AND LATE MARRIAGES
Estimate of their relative effects on a population in a few generations; example.
MARKS FOR FAMILY MERIT
On the demand for definite proposals how to improve race; the demand is not quite fair, and the reasons why; nevertheless attempt is made to suggest the outline of one; on the signs of superior race; importance of giving weight to them when making selections from candidates who are personally equal; on families that have thriven; that are healthy and long-lived; present rarity of our knowledge concerning family antecedents; Mr. F.M. Hollond on the superior morality of members of large families; Sir William Gull on their superior vigour; claim for importance of further inquiries into the family antecedents of those who succeed in after life; probable large effect of any system by which marks might be conferred on the ground of family merit.
ENDOWMENTS
These have frequently been made in order to furnish marriage portions; they, as well as the adoption of gifted children of gifted families, may hereafter become common; college statutes enjoining celibacy on Fellows; reverse effect to that for which prizes at races were established; the recent reform of those statutes and numerous marriages in consequence; the English race has yet to be explored for its natural wealth; those who are naturally gifted would be disinclined to squander their patrimony; social consideration; honest pride in goodness of race.
CONCLUSION
Epitome of data; the apparent place of man in nature; he should look upon himself as a freeman; he should assist in furthering evolution; his present ability to do so; the certainty that his ability of doing so will increase; importance of life-histories; brief summary.
APPENDIX
A. COMPOSITE PORTRAITURE
I. Extract of Memoir read in 1878 before the Anthropological Institute; II. Generic Images, extract from Lecture in 1879 to Royal Institution; III. Memoir read in 1881 before the Photographic Society.
B. THE RELATIVE SUPPLIES FROM TOWN AND COUNTRY FAMILIES TO THE POPULATION OF FUTURE GENERATIONS
Memoir read in 1873 before the Statistical Society.
C. AN APPARATUS FOR TESTING THE DELICACY WITH WHICH WEIGHTS CAN BE DISCRIMINATED BY HANDLING THEM
Memoir read in 1882 before the Anthropological Institute.
D. WHISTLES FOR TESTING THE UPPER LIMITS OF AUDIBLE SOUND IN DIFFERENT INDIVIDUALS
Read in 1876 at the South Kensington Conferences in connection with the Loan Exhibition of Scientific Instruments.
E. QUESTIONS ON VISUALISING AND OTHER ALLIED FACULTIES
Circulated in 1880.
PLATES
SPECIMENS OF COMPOSITE PORTRAITURE
EXAMPLES OF NUMBER-FORMS
EXAMPLES OF NUMBER-FORMS
EXAMPLES OF NUMBER FORMS, HEREDITARY
COLOUR ASSOCIATIONS AND MENTAL IMAGERY
INQUIRIES INTO HUMAN FACULTY
INTRODUCTION.
Since the publication of my work on _Hereditary Genius_ in 1869, I have written numerous memoirs, of which a list is given in an earlier page, and which are scattered in various publications. They may have appeared desultory when read in the order in which they appeared, but as they had an underlying connection it seems worth while to bring their substance together in logical sequence into a single volume. I have revised, condensed, largely re-written, transposed old matter, and interpolated much that is new; but traces of the fragmentary origin of the work still remain, and I do not regret them. They serve to show that the book is intended to be suggestive, and renounces all claim to be encyclopedic. I have indeed, with that object, avoided going into details in not a few cases where I should otherwise have written with fulness, especially in the Anthropometric part. My general object has been to take note of the varied hereditary faculties of different men, and of the great differences in different families and races, to learn how far history may have shown the practicability of supplanting inefficient human stock by better strains, and to consider whether it might not be our duty to do so by such efforts as may be reasonable, thus exerting ourselves to further the ends of evolution more rapidly and with less distress than if events were left to their own course. The subject is, however, so entangled with collateral considerations that a straightforward step-by-step inquiry did not seem to be the most suitable course. I thought it safer to proceed like the surveyor of a new country, and endeavour to fix in the first instance as truly as I could the position of several cardinal points. The general outline of the results to which I finally arrived became more coherent and clear as this process went on; they are brieflv summarised in the concluding chapter.
VARIETY OF HUMAN NATURE.
We must free our minds of a great deal of prejudice before we can rightly judge of the direction in which different races need to be improved. We must be on our guard against taking our own instincts of what is best and most seemly, as a criterion for the rest of mankind. The instincts and faculties of different men and races differ in a variety of ways almost as profoundly as those of animals in different cages of the Zoological Gardens; and however diverse and antagonistic they are, each may be good of its kind. It is obviously so in brutes; the monkey may have a horror at the sight of a snake, and a repugnance to its ways, but a snake is just as perfect an animal as a monkey. The living world does not consist of a repetition of similar elements, but of an endless variety of them, that have grown, body and soul, through selective influences into close adaptation to their contemporaries, and to the physical circumstances of the localities they inhabit. The moral and intellectual wealth of a nation largely consists in the multifarious variety of the gifts of the men who compose it, and it would be the very reverse of improvement to make all its members assimilate to a common type. However, in every race of domesticated animals, and especially in the rapidly-changing race of man, there are elements, some ancestral and others the result of degeneration, that are of little or no value, or are positively harmful. We may, of course, be mistaken about some few of these, and shall find in our fuller knowledge that they subserve the public good in some indirect manner; but, notwithstanding this possibility, we are justified in roundly asserting that the natural characteristics of every human race admit of large improvement in many directions easy to specify.