Part 4

=Paganism= 290 Painters' lives 927 Painting 750, 698 Palæontology 560 Palestine 956 Pantheism 212 Pantheistic psychology 147 Papacy 282 Paper-hanging 698 Paper manufacture 676 Paper money 332 Papua 995 Paraguay 989 Parchment 10 Parent and child 173 Parish law 343 Parks, public 711 Parliament 324 Parliamentary law 348 Parrots 598 Parseeism 295 Partnership 343 Parturition 618 Passions 157 Pastoral theology 250 Patagonia 989 Patents 608 Pathology 616 Patriarchal institutions 321 Patriotism 172 Patristic philosophy 189 Patronage 177 Pauperism 339 Pawnbroking 334 Peace and war 172 Pears 634 Peat 644 Pedobaptism 264 Peerage 322 Peloponnesus 938, 949 Penal law 345 Penance 244 Peninsular war 946 Penitentiaries 365 Penmanship 652 Pennsylvania 975 Pentateuch 222 Perception 152 Perfectionists 289 Perfumery 660, 646 Periodicals, _see_ special subjects. fine arts 705 general 50 history 905 literature 805 natural science 505 philology 405 philosophy 105 science 505 sociology 305 theology 205 useful arts 605 Perpetual motion 531 Persecutions 272 Persia, ancient history 935 Persia, modern history 955 Persian language 495 Personal liberty 342 Personal property 342 Personal rights 342 Perspective 742 Peru 985 Pests, agricultural 632 Petrifaction 560 Petroleum 549, 665 Pharmacopoeias 615 Pharmacy 615 Phi Beta Kappa 366 Philology 400 biography of 924 Philosophy 100 Philosophy ancient 180 biography of 921 Greek 180, 888 Latin 878 mental 150 modern 190 moral 170 natural 530 of art 701 history 901 language 401 literature 801 science 501 sociology 301 religion 201 useful arts 601 Phoenicia 939 Phoenician language 493 Phonetic short-hand 653 Phonetic spelling 421 Phonography 653 Phonology 414 Photographic chemistry 771 Photographs 773 Photography 770 Photo-lithography 775 Phrase-books, _see_ Language. Phrenology 139 Phthisis 616 Physical education 613 Physical geography 551 Physics 530 Physics molecular 539 Physiognomy 138 Physiography 551 Physiology 612 Physiology comparative 591 Physiology, mental 131 Physiology, vegetable 581 Piano-forte 786 Picture galleries 759 Piedmont 945 Pig 636 Piracy 345 Pisciculture 639 Plague 616, 614 Planets 523 Plans for building 692 Plants 580 landscape gardening 716 paleontology 561 Platonic philosophy 184 Platonists, new 186 Playing cards 795 Plays, _see_ Drama 812, 792 Pleading 349 Plumbing 696 Plurality of worlds 521 Pneumatics 533 Pneumatology 150 Poetical books of Bible 223 Poetry 811 English 821 French 841 German 831 Greek 881 Italian 851 Latin 871 Spanish 861 Poets, lives 928 Poisons 615 Poland 949 Polar Regions, geography 919 Polar seas 998, 999 Police 354 Polish language 497 Politeness 177 Political associations 363 Political economy 330 Political essays 329 Political institutions 363 Political science 320 Political sermons 256 Political speeches 329 Polity, ecclesiastical 262 Polygamy 173, 345 Polygraphy 40 Polynesia, botany 589 customs and costumes 399 ecclesiastical history 279 geography 919 geology 559 history 996 languages 499 statistics 319 travels 919 Polyps 593 Polytheism 290 Pomology 634 Ponds, artificial 714 Poor 339 Poor laws 343 Popery 282 Population 312 Porcelain 738 Portrait painting 757 Portraits, photographs 777 Portugal 946 Portuguese language 469 Portuguese literature 860 Positivism 146 Postage-stamps 383 Post-offices 383 Potato 635 Pottery 673 Pottery manufacture 673 Poultry 636 Powder 662, 355 Practical astronomy 522 Practical theology 240 Practical sermons 254 Practice of medicine 615 Prayer 217 Prayer-meetings 247 Preaching and preachers 250 Precedents 343 Precious metals 549 Predestination 231 Pregnancy 618 Pre-historic archæology 571 Presbyterians 284 Prescriptions 615 Press, liberty of 324 Primeval man 571 Primitive Christianity 270 Primogeniture 322 Printing 655 Prints 769 Prison associations 365 Prisons 365 Private grounds 712 Private worship 248 Privateers 341 Probabilities 519 Production 338 Productions of the soil 633 Progress of civilization 312 Progress of population 313 Prohibited books 28 Prohibition 178 Projectiles 358, 531 Projection 744 Promissory notes 343 Pronunciation, 411, 421, 431, etc. Property 331 Property law 342, 343 Property tax 336 Prophecy 231 Prophetical books of Bible 224 Prose composition, Greek 485 Prose composition, Latin 475 Prosody, comparative 416 English 426 French 446 German 436 Greek 486 Italian 456 Latin 476 Spanish 466 Prostitution 618, 176 Protection 337 Protestant episcopal 283 Protestantism 283-289 Protestantism and Romanism 282 Protoplasm 576 Protozoa 593 paleontology 563 Provençal language 449 Proverbs, and quotations 819 Proverbs, Bible 223 Providence 2l4 Provincialisms 427, 437, etc. Pruning 634, 715 Prussia 943 Psalms 223 Pseudonyms 14 Psychology 140 Public accounts 336 Public buildings 725 Public charities 361 Public documents 328 Public education 370 Public funds 336 Public health 614 Public houses 390 Public lands 353 Public meetings 360 Public schools 378 Public speaking 815 Public worship 246 Pulpit oratory 250 Pumps 532 Punctuation, English 421 Punishment 345 Puritans 277, 289 Puseyism 244, 283 Pygmies 599 Pyramids 916, 932 Pyrites 549 Pyrotechnics 662 Pyrrhonism 186 Pythagorean philosophy 182

=Quadrumana= 599 Quadrupeds 599 Quakers 289 Qualitative analysis 544 Quantitative analysis 545 Quarantine 614 Quaternions 518 Quotations 819, 829, etc.

=Race-horse= 798 Races, history 572 Racing 798 Radiates 593 Radiates paleontology 563 Railroad engineering 625 Railroad locomotives 621 Railroads 385 Railways, laws of 343 Rain 551 Rank 322 Rationalism 211, 155 Readers 418, 428, 438, etc. Reading, art of 815 Reading courses 15, 16 Reading for self-education 374 Real estate law 343 Reason 155 Rebellion, Southern 973 Recipe books 640 Recreation 790 Reformation 274 Reformatory associations 364 Reformatory institutions 364 Reformed church 289 Regeneration 234 Regimen 613 Regulations of armies 355 Regulations of navies 359 Religion and science 215 Religion and sermons 255 Religions, Non-Christian 290 Religious anecdotes 249 Religious associations 362 Religious biography 922 Religious education 377 Religious fiction 249 Religious institutions 362 Religious orders 271 Religious philosophy 201 Remains 560 Rents 333 Repentance 234, 241 Reptiles 598 Reptiles paleontology 568 Republican institutions 324 Resistance of materials 691 Resurrection 236 Retribution 237 Revealed religion 231 Revelation 231 Revenue 336 Reviews, _see_ Periodicals. Revivals 269 Revolution, American 973 Revolution, French 944 Rhetoric 815 Rhetoric sacred 251 Rhode Island 974 Rhododendron 582 Riddles 819, 829, etc. Riding 798 Right of search 341 Rights and liberties 342 Riots 343 Ritualism 244 River transportation 387 Rivers 551 Roads 625 Rocky mountains 557, 917 Rodentia 599 Roman antiquities 937 Roman architecture 722 Roman Catholics 282 Roman history, ancient 937 Roman history, modern 945 Roman literature 870 Roman law 348 Roman mythology 292 Roman sculpture 733 Romance 813 English 823 French 843 German 833 Italian 853 Religious 249 Spanish 863 Romanic languages 440-469 Romansh language 459 Rome, ancient 937 Rome, modern 945 Romish church 282 Rope-making 677 Rowing 797 Rubber manufactures 675 Ruminants 599 Rural architecture 728 Rural sports 796 Russia 947 Russian America 977 Russian language 497

=Sabbatarians= 289 Sabbath 263 Sabbath reform 263 Sabbath schools 268 Sacrament of baptism 264 Sacrament of Lord's Supper 265 Sacred biography 922 Sacred rhetoric 251 Sacrifices 221 Saddlery 685 Sailors 387 St. Domingo 979 Sale catalogues of books 17, 18 Salt manufacture 664 Salvation 234 Sandwich Islands 997 Sanitary commissions 364 Sanitary commissions U.S. 361 Sanitary measures 614 Sanskrit language 494 Sardinia 945 Satan 235 Satire 817 English 827 French 847 German 837 Italian 857 Latin 877 Spanish 867 Savings banks 332 Saxon language 429 Saxons 943 Scandinavia 948 Scandinavian language 498 Scandinavian literature 898 Scepticism 211 Scholastic philosophy 198 Schools 378 Schools Sunday 268 School architecture 727 School houses 727 Schools of art 707 Schools of painting 753-756 Schopenhauer's philosophy 193 Schleswig-Holstein 943 Science, Natural 500 biography of 925 Scientific societies 506 Scientific travels 508 Scotland 941 Scotch language 496 Scotch philosophy 192 Scriptures 220 Scrofulous diseases 616 Sculpture 730 Sculptors' lives 927 Seamanship 656, 527 Secession 342 Second advent 236 Second sight 133 Secret societies 366 Sects, Christian 280 Secular education 377 Self-culture 374 Self-education 374 Semitic languages 493 Semitic literature 893 Sensation 152 Sensational psychology 145 Sense 152 Sepulchres 718 Sepulture 614 Sermons 252-259 Serpents 598 Servants 647 Servia 949 Sewerage 614 Sewing 687 Sewing machine 687 Sex in education 376 Sexual ethics 176 Sexual science 618 Sexes 136 Shades and shadows 744 Shakers 289 Shakesperiana 822 Sheep 636 Shells 594 Shells fossil 564 Shemitic languages 493 Ship-building 699 Ship-canals 626, 387 Shipping laws 346 Shoemaking 685, 675 Shooting 799 Short-hand 653 Shrubbery 716 Siam 959 Siberia 957 Sicily 945 Sick-room 649 Sieges 355, 623 Sight 536 Sight hygiene 613 Signals 654 Sign painting 698 Silk culture 638 Silk manufacture 677 Silk worm 638, 595 Silver metal 549 Silver mines 628 Silver money 332 Sin 233 Singing 784 Sisters of Mercy 362 Skating 796 Skepticism 211 Skin diseases 616 Skye 941 Slander 177, 345 Slang 427, 437, etc. Slating 695 Slavery 326 Slavic language 497 Slavic literature 897 Sleep 135 Sleep walking 135 Small-pox 616, 614 Soap-making 664 Social ethics 177 Social science 300 Social worship 247 Socialisms 335 Societies, fine arts 706 Societies, general 60 Societies, history 906 Societies, literature 806 Societies, natural science 506 Societies, philology 406 Societies, philosophy 106 Societies, science 506 Societies, secret 366 Societies, sociology 306 Societies, theology 206 Societies, useful arts 606 Society 177 Sociology 300 Sociology biography of 923 Socratic philosophy 183 Soils 631 Solar system 523 Soldiers 355 Somnambulism 135 Songs 784 Sonnets 811, 821, etc. Sophist philosophy 183 Sorcery 133 Soul 233 Sound 534 South Africa 968 botany 586 geography 916 South America 980 botany 588 customs and costumes 398 ecclesiastical history 278 geography 918 geology 558 history 980 statistics 318 travels 918 South Carolina 976 South seas 999 Southern States 976 Spain 946 Spanish language 460 Spanish literature 860 Spanish philosophy 196 Specie payment 332 Specifications for building 692 Specters 133 Spectroscope 535 Spectrum analysis 544 Speeches, _see_ Oratory. Spherical astronomy 521 Spherical geometry 513 Spherical trigonometry 514 Spiders 595 Spinoza's philosophy 147 Spiritualism 133 Spontaneous generation 577 Sports 796 Stables 636 Stage 792 Stained glass 745 Stammering 616 Stamps 383 Standing army 355 Starch manufacture 664 Stars 523 State 320 State ethics 172 State papers 328 State rights 342 State trials 345 Statesmen, lives 923 Statics 531 Statistical methods 311 Statistics 310 Statuary 730 Statute law 343 Steam-engine 621 Steam-fitting 696 Steam-navigation 527, 656 Steam-transportation 385, 656 Steel 669 Steel engraving 762 Stenography 653 Stereotyping 655 Stereoscopes and views 776 Stethoscope 616 Stipple engraving 765 Stock, live 636 Stocks 333 Stoic philosophy 188 Stoneware 673 Storms 551 Stills 663 Strategy 355 Strawberries 634 Stringed instruments 787 Study, methods of 371 Stuttering 616 Sublime and beautiful 701 Submarine telegraph 384 Succession 323 Suffrage 324 Sugar-cane 633 Sugar manufacture 664 Sugar planting 633 Suicide 131 Sumatra 992 Summer-houses 717 Sun 523 Sunda 992 Sunday-schools 268 Supernaturalism 133 Superstition 133 Surgery 617 Surnames 929 Surveying 622 Susceptibility 157 Sweden 948 Swedenborgians 289 Swimming 796 Swine 636 Switzerland 949 Syllogism 160 Symbolism 219 Synonyms, English 424 Synonyms, French 444 Synonyms, German 434 Synonyms, Greek 484 Synonyms, Italian 454 Synonyms, Latin 474 Synonyms, Spanish 464 Syphilis 616 Syria 956 Syriac language 493 Syro-Chaldaic 493 Systematic botany 582

=Tableaux= 791 Tables, dining 643 Tables, mathematical 514 Tachygraphy 653 Tactics 355 Tailoring 687 Takigrafy 653 Tales, _see_ Romance. Talmud 296 Tanning 675 Tariffs 337 Tartary 951, 959 Taste and criticism 701 Taxation 336 Taxidermy 579 Tea cultivation 633 Teachers and teaching 371 Technology, chemical 660 Teeth 611, 617 Tehuantepec 978 Telegraph 384 Telegraphy 654 Telescope 535, 522 Temperaments 137 Temperance 178 Temperature 551, 536 Templars 366 Tennessee 976 Testacea 594 Testament, New 225 Testament, Old 221 Testamentary law 349 Testimony 349 Texas 976 Textile fabrics 677 Texts, comparative 418 Texts, English 428 Texts, French 448 Texts, German 438 Texts, Greek, with notes 488 Texts, Greek, without notes 880 Texts, Italian 458 Texts, Latin, with notes 478 Texts, Latin, without notes 870 Texts, Spanish 468 Thanksgiving 244 Theater, _see_ Drama. Theater, ethics 175 Theaters 792 Theatricals 792 Theft 345 Theism 211 Theodicy 231, 214 Theological doctrine 230 Theological essays 204 Theology 200 Theology biography of 922 Theology devotional 240 Theology natural 210 Theology practical 240 Theoretical astronomy 521 Theoretical chemistry 541 Theoretical ethics 171 Therapeutics 615 Thibet 951 Thirty-nine articles 283 Thomsonianism 615 Thought 153 Throat diseases 616 Thunder 537 Tides 521 Tiling 695 Timber 691 Tin manufacture 671 Tin mineral 549 Tithes 336 Tobacco 615, 178, 633 Toilet 646 Tolls 336 Tombs 718 Topographical engineering 622 Topography 910 Total abstinence 178 Toxicology 615 Tractarianism 244, 283 Tract society 362 Trade 380 Trade marks 608 Trades, mechanic 680 Trades, unions 367, 606, 331 Tragedies, _see_ Drama. Transactions 106, 206, 306, etc. Transcendentalism 142 Translation, Greek authors 880 Translation, Latin authors 870 Transportation 380, 656, 345 Transubstantiation 282 Transylvania 943 Trapping 639 Travels 910 Travels scientific 508 Treason 345 Treasury 352 Trees 580 Trees, ornamental 715 Trespass 345 Trials 340 Trigonometry 514 Trilobites 565 Trinity 232 Troubadours 449, 841 Trunk-making 685 Trusts and trustees 344 Tungusic language 499 Tunnels 625 Turkey 949 Turkey in Asia 956 Turkish baths 613 Turkish language 499 Turning 674 Tuscany 945 Type founding 671 Typography 655 Tyrol 943

=Understanding= 153 Uniforms 355 Unitarians 288 United States 324, 973 botany 587 customs and costumes 397 ecclesiastical history 277 geography 917 geology 557 history 973 statistics 317 travels 917 Universal History 909 Universal language 408 Universalism 288 Universities 378 University education 373 Upholstering 645 Uruguay 989 Useful arts 600 biography of 926 Usury 334 Utah 977

=Vases= 738 Vaudois 272, 949 Vegetable physiology 581 Vegetable practice 615 Vegetables 635 Vegetarianism 613 Venereal diseases 616 Venezuela 987 Venice 945 Ventilation 697 Ventriloquism 133 Vermont 974 Versification 811 Vertebrates 596 Vertebrates paleontology 566 Veterinary medicine 619 Villas 728 Violin 787 Virginia 976 Virtue 170 Vision 535 Visions and dreams 135 Vital principle 576, 612 Vocal culture 784, 815 Vocal music 784 Voice 784 Volcanoes 553 Voyages 910

=Wages= 331 Wakefulness 135 Waldenses 272, 945 Wales 942 Walks 713 Wallachian language 459 War ethics 172 War science 355-359 Warehouses 380 Warming 697 Washing 648 Washington territory 977 Watch-making 681 Water, artificial ponds, etc. 714 Water colors 751 Water cure 615 Water wheels 531, 621 Water works 628 Watering-places 613 Wax flowers 745 Wealth 331 Weather 551 Weaving 677 Weights and measures 389 Welsh language 496 West Indies 979 West Virginia 976 Western States 977 Whale 599 Whale fisheries 639 Wheat 633 Whigs 324 Whigs English 323 Whist 795 Will 159 Wills 343 Wind instruments 788 Wine 663 Wisconsin 977 Wit 819, 829, 839, etc. Witchcraft 133 Woman, education 376 Woman, suffrage 324 Wood engraving 761 Wood manufactures 674 Wool 636 Wool manufactures 677 Working classes 331 Worship 246-248 Writing 651 Writing short-hand 653

=Xylography= 655

=Yachting= 797 Year books 313 Yellow fever 616 Young men's association 362

=Zend= 295 Zend Avesta 295 Zodiac 521 Zoölogy 590 Zoöphytes 593 Zoroaster 295

* * * * *

EXPLANATIONS.

* * * * *

The titles of the subject catalogue are exact transcriptions of the title page, neither amended, translated, or in any way altered, except that mottoes, titles of authors, repetitions, or matter of any kind not essential to a clear titular description, are _omitted_. Omissions of mottoes are indicated by three stars (* * *); of other matter by three dots (...). The phraseology, spelling, and punctuation of the title are exactly copied; but capitals are given only to proper names and adjectives, and initial words of sentences. Any additions needed to make the title clear are supplied and enclosed by brackets.

After the titles, are given in order: the place of publication; the year; the year of copyright, if different, in brackets; the edition; the number of volumes, or of pages if in only one volume; the illustrations, maps, plates, or portraits; and the size nearest in the arbitrary scale, regardless of the fold of the sheet. This scale gives the heights in decimeters. Square and oblong books have the size prefixed by _sq_. or _ob_. Books 1 decimeter high are called 32°; 1.5 deci., 16°; 2 deci., 12°; 2.5 deci., 8°; 3 deci., 4°; and all others are marked simply by the nearest height, i.e. a book marked 4 is between 3.5 and 4.5 decimeters high. In books having more than one pagination the number of pages is indicated by giving the last number of each pagination connected by a +; an added + indicates additional matter unpaged.

These imprint entries give the facts regardless of the title page, and are left blank only when they can be ascertained neither from the book itself or other sources.

The contents of volumes are given when on title pages, or when necessary to properly identify the volume, but no analysis is attempted. Necessary notes are given at the bottom of the subject card after the imprint entries.

Duplicates are simply marked copy 2, copy 3, etc., and bear the same class and book number, but editions of the same book distinct in character are catalogued separately.

In all the catalogues, books are entered under the _surnames_ of authors when known; under the _initials_ of author's names, when these only appear, the last initial being put first; under the _pseudonyms_ of the writers, when the real names are not ascertained; under the names of _editors_ of collections; under the names of _countries, cities, societies,_ or other _bodies_ which are responsible for their publication; under the _first word_ not an article of the titles of periodicals and of anonymous books the names of whose authors are not ascertained. _Commentaries_ with the text, and _translations_ are entered under the heading of the original work, but commentaries without the text are entered under the name of the _commentator_. The Bible or any part of it in any language is entered under the word _Bible_. Books having more than one author are entered under the first named on the title.

In the headings of titles, the names of authors are given in their vernacular form. In English and French surnames beginning with a prefix (except the French de and d') the name is recorded under the prefix. In other languages and in French names beginning with de and d', the name is recorded under the word following the prefix. Compound surnames are entered under the first part of the name. Noblemen and ecclesiastical dignitaries are entered under their family names, but _sovereigns, princes, oriental writers, friars, persons canonized_, and all other persons known _only_ by their first name, are entered under this first name.

The catalogue is not a biographical dictionary, so only gives the names of authors with sufficient fullness to distinguish them from each other in practical use.

Names in =full face type= are the ruling headings under which the books are entered in the various catalogues. Entries not beginning with this type are in addition to the first or main entry, and are made under the names of _translators, editors, commentators, continuators_, etc., as

## participators in the authorship; also in the case of books having more

than one author, or having both generic and specific titles, or published by societies or other bodies, and having also the name of the individual author. These additional entries are made in order to carry out the plan of the Authors' Catalogue, which aims to give under each author's name all his works which the library contains.

The works of an author known by more than one name are given all together, under the form of name chosen. Any other name or title by which he may be known, if it differs in the first three letters, is entered in its alphabetical place, followed by the word _see_ and the name under which the books are entered. Such cross references have no titles given under them, but are simply guides to the name chosen.

A single dash indicates the omission of the preceding heading; a subsequent dash indicates the omission of a subordinate heading or of a title. A dash connecting numbers signifies _to and including_; following a number it signifies _continuation_. A ? following a word or entry signifies _probably_. Brackets enclose words added to titles or changed in form.

The German diphthongs ä, ö, ü are written, ae, oe, ue.

Dates are all given in years of the common calendar, and Arabic numerals are uniformly used for all numbers.

SUBJECT CATALOGUE.

The Subject Catalogue on large cards can be used to advantage only with the aid of the _Classification_ or _Index_. To find what the library has on any given subject, get from the Index the class number of that subject. Under this number in the Subject Catalogue will be found the full titles of the books, with imprints, cross references, and notes. The class number, by which the cards are arranged, is given in the upper left corner and immediately under it is the book number. Any other class number given in the left hand margin refers to another subject of which the book also treats. When the class number at the top is followed by an additional figure in brackets, the subject as given in the printed scheme has been subdivided in arranging the cards. This subdivision will be found on the first card of the catalogue which bears this class number. These figures in brackets determine the arrangement of the titles in the Catalogue, but on the shelves, in the Shelf Catalogue, and in calling for and charging books, they are entirely disregarded. Thus a book numbered 942(7).14 would be in the Catalogue among the 942 cards arranged by the figure in brackets as though it were a decimal, but it would be called for as 942.14, the brackets indicating that the final classing was limited to the Catalogue and was not extended to the shelves. If a fourth figure is added without brackets, the final classing is extended to the shelves as well as to the catalogue, and all the figures must be used in calling for the book. In such cases the added figure is treated as a decimal in the arrangement, though the decimal point is not written.

The last card which bears any class number, gives under that number, followed by the word SEE the call numbers of other books which treat of the same subject, but are classed elsewhere. General cross references are also made in many cases without specifying individual books, as from _Commerce_ as a question of SOCIAL SCIENCE (380) to _Commerce_ as a USEFUL ART, Book-keeping Business Manuals, etc. (650). In such cases there is a card under 380 marked SEE 650, and under 650 there is a card marked SEE 380. From whatever stand-point a subject is approached, the cross references guide at once to the same subject treated in its other relations. These cross references both general and specific are often accompanied by brief notes, characterizing the books to which reference is made.

There will be found at the beginning of many class numbers, a card noting the most reliable books on that subject, and the best of the articles in periodicals, transactions, and collected works with the volume and page where they may be found. It is hoped to give special prominence to these notes for the guidance of readers, and they will be added as rapidly as other duties allow.

Many subjects will have no sub-section cards at the beginning; some will have no reference cards at the end; and some may have no titles given under the number. The scheme provides a place for books on all subjects, whether the library has them or not, so where no titles are given under a class number it shows that the library has as yet no books on that subject.

Articles in periodicals and transactions, separate volumes of sets and collections which are located together, _if catalogued_ are put under their proper subject number, but no _book number_ is given with it. The call number of the book, where they may be found, is always given in the margin preceded by the word IN. In the same way special chapters in books will sometimes be catalogued, _e.g._ a card marked 338 IN 331-27, would mean that in the 27 books on 331, _Capital and Labor_, there was a chapter on 338, _Production_.