THE BRAIN AND ITS FUNCTIONS. 



By J. LUYS, 



Physician to the Hospice de la Salpetri^re. 



With Illustrations. 12mo, cloth. Price, $1.50. 



" No livinpT physiolo'rist is better entitled to speak with authority upon the stnicture 

 ar-d functiors of the brain than Dr. Luys. His studies on the anatomy of the nervous 

 tvstem are acknowledged to be the fullest and most systematic ever undertaken.''" — 

 /St. Jameses Gazette. 



"Dr. Luys, at the head of the prreat French Insane Asylum, is one of the most 

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

 unquestionably the clearest and most interesting brief account yet made of the struct- 

 ure and operations of the brain." — Popular Science Monthly. 



" It is not too much to say that M. Luys has gone further than any other investi- 

 gator into this great field of study, and only those who are at least dimly aware of the 

 vast changes going on in the realm of psychology can appreciate the importance of his 

 revelations. Particularly interesting and valuable are the chapters dealing with the 

 genesis and evolution of memory, the development of automatic activity, and the de- 

 velopment of the notion of personality." — Boston Evening Traveller. 



"Thanks to his method of cutting the brain into thin sections, hardening them with 

 chromic acid, photographing them, and then examining the plates through the micro- 

 Bcope, he has succeeded in gaining a knowledge of the structure of the brain which is 

 amazing in extent and startling in its character. But, however advanced his anatoiuy, 

 his physiology is still more so. He has reached conclusions which will be of high im- 

 portance in the treatment of mental diseases and derangements."— ^05/<wi Courier. 



" M. Luys is one of the most indefatigable of explorers. The first part of the volume 

 is devoted to the anatomy of the brain ; the second part is purely physiological, and 

 naturally sh.ades into the domain of psychology. The author says : ' I have endeavored 

 to show that the most complex acts of psycho-intellectual activity are all definitely 

 resolvable, by the analysis of nervous activity, into regular processes ; that they obey 

 regular laws of evolution ; that, Hke all their "organic fellows, they are capable of being 

 interrupted or disturbed in their manifestations by dislocations occurring in the essen- 

 tial structure of the organic substratum which supports them ; and that, in a word, 

 there is from this time forth a true physiology of the brain, as legitimately established, 

 as legitimately constituted, as that of the heart, lungs, and muscular system.' " — 

 Philadelphia Press. 



" For years the brain has formed the subject of Dr. Luys's public lectures at the 

 great asjdum over which he presides. He has paid particular attention to these as yet 

 little explored regions, the nervous centers, making, for that purpose, regularly strati- 

 fied sections of the cerebral tissue, and faithfully reproducing them by means of pho- 

 tography. In this way he has been able to throw fre.sh light on the intricate structure 

 of the nerve-cell and the organization of its protoplasm. Having thus examined the 

 elementary properties of the nervous system, he has proceeded to show how it oi>erate9 

 in producing the phenomena of cerebral physiology, and, carrying the data of contem- 

 porary physiology into the domain of speculative psj'chology. he has endeavored to 

 show that the most complex acts of psycho-intellectual activity are all definitely re- 

 solvable into regular processes and obey regular laws of evolution."— j!/on^r<;a/ Gazette. 



For sale by all booksellers ; or sent by mail, post-paid, on receipt qf inicc. 



New York: D. APPLETON & CO., 1, 3, & 5 Bond Street. 



