The First Principles of Heredity 



BY S. HERBERT 

 M.D. (Vienna), M.R.C.S. (Eng.), L.R.C.P. (Lond.) 



Cloth, 8vo, illustrated, $1.75 net; by mail, %i.8f 



This book is the only one of its scope in the English 

 language. It gives a popularly written yet scientific ac- 

 count of all that the average educated reader may desire 

 to know about " Heredity and Kindred Subjects," without 

 assuming any knowledge of the subject on the reader's 

 part. 



Heredity and Social Progress 



BY SIMON N. PATTEN, PH.D., LL.D. 



Professor of Political Economy, University of Pennsylvania. 

 Author of " The New Basis of Civilization," etc. 



Cloth, i2mo, $f.2j net 



" With keen philosophic insight Professor Patten, in this 

 book, probes to the roots of biology and plants there the 

 foundations of economics and other social sciences. It is a 

 bold deduction, wrought out with perfect logic, and shows 

 one common principle active in every advance from the 

 lowest unicellular organism to the highest social institu- 

 tion." Annals American Academy. 



" It is a book rich in suggestion and presents the sub- 

 ject in a clear and sometimes rather startling manner." 

 Ohio Farmer. 



THE MACMILLAN COMPANY 



Publishers 64-66 Fifth Avenue New Tork 



