V.

_The Practical Astronomer:_

COMPRISING ILLUSTRATIONS OF LIGHT AND COLORS; PRACTICAL DESCRIPTIONS OF ALL KINDS OF TELESCOPES, &C., WITH DESCRIPTIVE ACCOUNTS OF THE EARL OF ROSSE'S LARGE TELESCOPES, AND OTHER TOPICS CONNECTED WITH ASTRONOMY.

BY THOMAS DICK, LL.D.,

AUTHOR OF THE "CHRISTIAN PHILOSOPHER," "CELESTIAL SCENERY," "THE SIDEREAL HEAVENS," &c.

100 Engravings. 12mo, Muslin, extra gilt, 50 cents.

The _name_ of the distinguished author of this work is a sufficient passport to public favor and a sure guarantee to its sterling value, and those who have read Dr. Dick's former works will need no recommendation of this book by us. He is not only an original and profound observer of nature, but truly a most excellent _Christian_ philosopher, whose powers of intellect and expanded views of the character of the great Architect of the universe are so eminently calculated to direct the mind not alone to the grandeur, the magnificence, and sublimity of the laws and principles of the material world, but to look through nature up to "Nature's God." It is truly a valuable work.--_Farmer and Mechanic._

The merits of this work are of the highest order; Dick is one of the profoundest and purest of modern philosophers.--_Western Continent._

Here is the ninth volume presented by this gifted author to the public; the aim of all of which has been to simplify sciences which before have been too often considered as every way _above_, and therefore unworthy of the attention of ordinary readers. It is specially addressed to private students and the higher schools, and comprises a large amount of new and valuable matter connected with astronomy, and pointing out ways in which the more humble student can in the best way improve the advantages placed in his way.--_Auburn Journal._

Let not the inquisitive fear that the intricacies of science or the technicalities of language will obstruct the pleasure they will derive from the study of this book; for the clearness of the author's style, and the elucidation of the one hundred engravings, render it within the scope and comprehension of every intelligent student.--_Industrial Record._

The copious use of engravings and of pictorial illustrations, together with the plain, popular explanations, render this book a truly _practical_ work. Dr. Dick is not only thoroughly scientific, but he knows well how to render his acquisitions available to the great body of common readers, by his accurate method and clear descriptions.--_Watchman._

We have always been an admirer of the writings of this gentleman, and popularity keeps on his side wherever he is known. He is a profound thinker and a devout Christian. His works all tend to illustrate the simple as well as the sublimest principles of philosophy, and while they instruct, can not fail to enlighten. The present volume comprises illustrations of light and colors, practical descriptions of all kinds of telescopes, the use of the equatorial-transit, circular, and other astronomical instruments, and other topics connected with astronomy. It is illustrated by 100 engravings, and will be found a most valuable book for all classes, but particularly as a work of instruction for youth.--_Illustrated Magazine._

VI., VII.

_The Life of Paul Jones._

BY ALEXANDER SLIDELL MACKENZIE, U. S. N.

2 vols. 12mo, Portrait, Muslin, extra gilt, $1 00.

The history of the naval adventures and victories of Paul Jones forms one of the most romantic chapters in the record of great deeds, and can not fail to attract general and ardent attention, since it relates to the very beginning of the American navy.--_Commercial Advertiser._

The various biographies of Paul Jones now extant have been carefully searched by Mr. Mackenzie; as also the log books of Jones's various cruizes and papers in possession of his heirs, with a view to procure a full and authentic collection of facts and incidents for the present work. Thus industriously compiled and stored, and that by an able hand, this edition must necessarily, as it does, possess considerable merit.--_Philadelphia Chronicle._

Paul Jones will always be regarded as one of the most daring and gallant heroes who ever made the ocean the theater of their exploits. Such a name can never be forgotten by Americans, nor can the services which he rendered to the cause of American liberty, in its infant struggles, ever pass into oblivion. No better biographer for such a character could have been found than Captain Mackenzie. Familiar with all the details of seamanship, possessing the same bold patriotism which made the career of his hero so illustrious, and being an accomplished and vigorous writer, he has given us a most admirable biography.--_Courier and Enquirer._

This is a capital American biography, of an American naval hero, scarcely less renowned and no less gallant and gifted with an heroic spirit than Nelson, the great British admiral. There is scarcely a more stirring life in the whole compass of literature than that of Jones; and the important part he played in giving force and almost life itself to the American navy, then in its earliest infancy, renders his history peculiarly interesting and attractive. No man certainly ever performed more gallant exploits, and few have rendered more important service to the cause of freedom than he. Many of his actions for bravery, skill, and the performance of almost incredible deeds, by apparently the most inadequate means, are scarcely rivalled by any thing in the records of naval history. His life should be familiar to American readers; and in the elegant, forcible, and graphic style of Commander Mackenzie it can not fail to be universally read.--_True Sun._

We are glad to see the life of this celebrated man by one competent to write it. His adventures border so much on the marvelous that one is glad to be sure of reading only what is authentic, and that written in a style and language becoming the subject. There is a good moral lesson conveyed in this life of Paul Jones.--_Christian Advocate and Journal._

The name and achievements of Paul Jones are indissolubly connected with American history; and his renowned deeds, which made him the terror of the coast of Britain, are among the most romantic in the annals of naval warfare, and impart to this work the highest interest. This is the most complete and authentic biography of Commodore Jones ever published, as all accessible materials have been collected, and are used by Commander Mackenzie with the ability and tact which he possesses as an accomplished scholar and an officer, accomplishments which peculiarly qualify him to write naval biography. A fine portrait of this true naval hero will be found in the first volume.--_Baltimore American._

We have read it with some care, and compared it with other biographies, and think it greatly superior to any yet published. It contains a full narrative of all the important events in Jones's eventful career, and yet is less voluminous than previous works.--_Highland Courier._