Opinions of the Press on the ‘International Scientific Series.” 
XI. 
Animal Mechanism, 
A Treatise on Terrestrial and Aérial Locomotion. 
By E. J. MAREY, 
Professor at the College of France, and Member of the Academy of Medicine. 
With 117 Illustrations, drawn and engraved under the direction of the author. 
rvol.,zzmo. Cloth . . . . Price, $1.75 
“We hope that, in the short glance which we have taken of some of the most im- 
portant points discussed in the work before us, we have succeeded in interesting our 
readers sufficiently in its contents to make them curious to learn more of its subject- 
matter. We cordially recommend it to their attention. 
“The author of the present work, it is well known, stands at the head of those 
physiologists who have investigated the mechanism of animal dynamics—indeed, we 
may almost say that he has made the subject his own. By the originality of his con- 
ceptions, the ingenuity of his constructions, the skill of his analysis, and the persever- 
ance of his investigations, he has surpassed all others in the power of unveiling the 
complex and intricate movements of animated beings.” —Popular Science Monthly. 
XII. 
History of the Conflict between 
Religion and Science. 
By JOHN WILLIAM DRAPER, M. D., LL.D., 
Author of “ The Intellectual Development of Europe.” 
x vol., r2mo. :} . 7 3 . Price, $1.75. 
“This little ‘ History’ would have been a valuable contribution to literature at any 
rime, and is, in fact, an admirable text-book upon a subject that is at present engross- 
ing the attention of a large number of the most serious-minded people, and it is no 
small compliment to the sagacity of its distinguished author that he has so well gauged 
the requirements of the times, and so adequately met them by the preparation of this 
volume. 1t remains to be added that, while the writer has flinched from no responsi- 
bility in his statements, and has written with entire fidelity to the demands of truth 
and justice, there is not a word in his book that can give offense to candid and fair- 
minded readers.""—V. Y. Evening Post. 
“« The key-note to this volume is found in the antagonism between the progressive 
tendencies of the human mind and the pretensions of ecclesiastical authority, as devel- 
oped in the history of modern science. No previous writer has treated the subject 
from this point of view, and the present monograph will be found to possess no less 
originality of conception than vigor of reasoning and wealth of erudition. . . . The 
method of Dr. Draper, in his treatment of the various questions that come up for dis- 
cussion, is marked by singular impartiality as well as consummate ability. Through- 
out his work he maintains the position of an historian, not of an advocate. His tone is 
tranquil and serene, as becomes the search after truth, with no trace of the impassioned 
ardor of controversy. He endeavors so far to identify himself with the contending 
parties as to gain a clear comprehension of their motives, but, at the same time, he 
submits their actions to the tests of a cool and impartial examination.” —W. V. Tribune. 
D. APPLETON & CO., PUBLISHERS, 549 & 551 Broadway, N. Y. 
