Scientific Publications. 



THE FUNDAMENTAL CONCEPTS OF MODERN PHILOSOPHIC 

 THOUGHT, CRITICALLY AND HISTORICALLY CONSID- 

 ERED. By RUDOLPH ECCKEN, Ph. D., Professor in Jena. With an 

 Introduction by NOAH PORTER, President of Yale College. One vol., 12mo, 

 304 pages. Cloth. Price, $1.75. 



President Porter declares of this work that " there are few books within his 

 knowledge which are better fitted to aid the student who wishes to acquaint him- 

 self with the course of modern speculation and scientific thinking, and to form 

 an intelligent estimate of most of the current theories." 



MIND IN THE LOWER ANIMALS IN HEALTH AND DISEASE. 



By W. LAUDER LINDSAY, M. D., F. R. S. E., etc. 2 vols., Svo. Cloth, $4.00. 



"The author of this work, which, regarded merely as an accumulation of 

 verified and classified facts, is a unique and precious contribution to the data of 

 comparative psychology, claims that he entered on his inquiry without any theory 

 to defend, support, or illustrate. We are bound to say that, while his general 

 conclusions are boldly and continually avowed, his claim of fairness and caution 

 is justified by his method of examining particular phenomena ; that he seems 

 willing at all times to renounce any impression or belief which is shuwu to be 

 scientifically untenable." New York Sun. 



"In this work two volumes of over 500 pages Dr. Lindsay marshals a pro- 

 portionately large number of facts against those philosopher^ who maintain that 

 the intelligence of man differs in kind and not simply in degree from that of the 

 lower animals. It is one purpose of his book to show that the main differences 

 between man and the lower animals exist rather in their physical than in their 

 mental structure. In this way of thinking, all animals possess not the semblance 

 of, but the true substance of mind and will." Xew York World. 



" So far as we are aware there has been no treatise upon the subject of animal 

 intelligence so broad in its foundations, so well considered, or so scientific in its 

 methods of inquiry, as that which has been prepared by Dr. W. Lauder Lindsay 

 in two large volumes, the first being devoted to a study of animal mind in health, 

 and the second to animal mind in disease. We may sail-ly say that his wc.rk is, 

 in some respects, the most important essay of the kind that has yet been under- 

 taken. His observations have been supplemented by a thorough mastery of the 

 history and literature of the subject, and hence his conclusions rest upon the 

 broadest possible foundation of safe induction. There is a good analytical index 

 to the book, as there ought to be to every work of the kind."' Sew York Evening 

 Post. 



THE ELEMENTARY PRINCIPLES OF SCIENTIFIC AGRICULT- 

 URE. By N. T. LrpTON, LL. D., Professor of Chemistry in Vanderbilt 

 University, Nashville, Tenn. 18mo. Cloth. Price, 45 cents. 



A GLOSSARY OF BIOLOGICAL. ANATOMICAL, AND PHYSIO- 

 LOGICAL TERMS. By THOMAS DTTNMAN. Small Svo. Cloth. 101 

 pages. Price, $1.00. 



" It has been the author's task to furnish here a small and convenient but very 

 complete glossary of those terms ; and he has done this so well, both in his choice 

 of terms for definition and in his clear exposition of their etymological and tech- 

 nical meaning, as to leave nothing to be desired in this direction." New York 

 Evening Post. 



For sale by all booksellers, or any ivork sent by mail, post-paid, on receipt of price. 



D. APPLETON & CO., Publishers, 



1, 3, and 5 Bond Street, New York. 



