SCIENTIFIC PUBLICATIONS, 



The Brain and its Functions. 



By J. LuYS, Physician to the Hospice de la Salpetriere. With Illustra- 

 tions. 12mo. Cloth, 11.50. 



•^'No living physiologist is better entitled to speak -with anthority upon the structure 

 and fauctious of the hrain than Dr. Luys. His studies on the anatomy of the nervous 

 system are acknowledged to be the fullest and mo&t systematic ever undertaken. Dr, 

 Lays supports his conclusions not only by his own anatomical researches, but also by 

 many functional observations of various other physiolog-ists, including of course Professor 

 Feurier's now classical experiments." — St. Jameses Gazette. 



"■Dr. Luys, at the head of the great French Insane Asylum, is one of the most eminenit 

 and successful investigators of cerebral science now living; and he has given unquestion- 

 ably the clearest and most interesting brief account yet made of the structure and opera- 

 tions of the brain. We have been fascinated by this volume more than by any other treatise 

 we have yet seen on the machinery of sensibility and thought ; and we have been instructed 

 not only by raucii that is new, but by many sagacious practical hints such as it is well lor 

 everybody to underscand.'" — The Poplar Science Monthly. 



The Concepts and Theories of Modem Physica 



By J. B. Stallo. 12mo. Cloth, ll.TS. 



"^ Judge Stallo's work is an inquiry into the validity of those mechanical conceptions 

 of the universe which are now held as fundamental in physical science. He takes up the 

 l.^ading modern doctrines which are based upon this rueebanical conception, such as the 

 atomic constitution of matter, the kinetic theory of gases, the conservation of energy, the 

 nebilar hypothesis, and other views, to find how much stands upon solid empirical trround, 

 and how much rests upon metaphysical speculation. Since the appearance of Dr. Draper's 

 *• Religion and Science," no book has been published in the country calculated to make so 

 deep an impression on thoughtful and educated readers as this volume. . . . The range 

 and minuteness of the author's learning, the a<nteness of his reasoning, and the sineulai 

 precision and clearness of his style, ara qualities which very seldom have been jointly 

 exhibited in a scientifi.c treatise. "■ — Xem York Sun. 



The Formation of Vegetable Mould, 



THROUGH Tim ACTIOX OF WORMS, WITH OBSERTATIONS ON 

 THEIR HABITS. By Charles Daewix, LL. D., F. R. S., author of " On 



the Origin of Spedss^" etc., etc With Illustratiori&. 12mOy elotk Price, 



$1.5a. 



"Mr. Darwin''s Tittle volume on the- habits jmd fnstfncts erf earth-worms is no less 

 marked than the earlier or more elaborate etForts of his genius by freshness of observation,, 

 unfailing power of interpreting and correlating fact*, and logical vigoF in generalizing 

 upon the?m. The main purpose erf" the work is to point out the share which worms have 

 taken in the formation of the layerof vegetable mould which covers the whole surface of 

 the land in every- modei-ately humid country. All lovers of nature will unite in thanking 

 Mr. Darwin for the new and interesting Ireht he has thrown upon a subject so long over- 

 looked, yet so fun of interest and instruction, as the stnrcttrre and the labors of the earth- 

 worm." — Satmiim/ Eeviem. 



" Respecting worms as among the most useful portions of anima'te nature, Dr. Darwim 

 relates, fn this remarkable book, their structure and hrsbits, the part they have played in 

 the burial of ancient buDdirrgs ani the denuda'tion of the land, in the di^intesration of 

 rocks, the preparation of soil for the growth ol plants, and in the natural history of the 

 viQria.''— Boston Advertiser. 



New York:. D. APPLETOX &: CO.,, 1, 3, & 5 Band Street. 



