THE WORKS OF TH. RIBOT. 



Heredity : A Psychological Study of its Phenomena, Laws, Causes, and 

 Consequences. From the French. 12mo. Cloth, $2.00. 



"Heredity is that biological law by which all beings endowed with life tend 

 to repeat themselves in their descendants ; it is for the species what personal 

 identity is for the individual. The physiological side of this subject has been 

 diligently studied, but not BO its psychological wide. We propose to supply this 

 deficiency in the present work. 11 i roin the Introduction. 



English Psychology. From the French. 12mo. Cloth, $1.50. 



CONTENTS. Samuel Bailey, Alexander Bain, David Hartley, G. H. Lewes, 

 James Mill, John Stuart Mill, Herbert Spencer. 



Diseases of Memory : An Essay in the Positive Psychology. From 

 the French by William Ilumington Smith. 12mo. Cloth, $1.50. 



" Not merely to scientific, but to all thinking men, this volume will prove 

 intensely interesting." New York Observer. 



"M. Kibot has bestowed the most painstaking attention upon his theme, and 

 numerous examples of the conditions considered greatly increase the value and 

 interest of the volume. 11 Philadelphia North American. 



" ' Memory, 1 says M. Ribot, ' is a general function of the nervous system. It is 

 based upon the faculty possessed by the nervous elements of conserving a re- 

 ceived modification and of forming associations.' And again : ' Memory is a bio- 

 logical fact. A rich and extensive memory is not a collection of impressions, 

 but an accumulation of dynamical associations, very stable and very responsive 

 to proper stimuli. . . . The brain is like a laboratory full of movement where 

 thousands of operations are going on all at once. Unconscious cerebration, not 

 being subject to restrictions of time, operating, so to speak, only in space, may 

 act in several directions at the same moment. Consciousness is the narrow gale 

 through which a very small part of all this work is able to reach us. 1 M. Ribot 

 thus reduces diseases of memory to law, and his treatise is of extraordinary 

 Interest." Philadelphia, Press. 



THE WORKS OF FRANCIS GALTON, F. R.S. 



Hereditary Genius : An Inquiry into its Laws and Consequences. 

 New and revised edition, with an American Preface. 12mo. Cloth, 

 $2.00. 



"The following psjea embody the result of the first vigorous and methodical 

 effort to treat the question iu the true scientific spirit, and place it upon the 

 proper inductive basis. Mr. Gallon proves, by overwhelming evidence, that 

 genius, talent, or whatever we term great mental capacity, follows the law of 

 organic transmission runs in families, and is an affair of blood and breed : and 

 that a sphere of phenomena hitherto deemed capricious and defiant of rule is, 

 nevertheless, within the operation of ascertainable law. 1 ' From the American 

 Preface. 



English Men of Science : Their Nature and Nurture. 12mo. Cloth, 

 $1.00. 



For sale by cdl booksellers ; or sent by mail, post-paid, on receipt of price. 



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



