The Development of the Frog's Egg 



BY THOMAS HUNT MORGAN 



Professor of Experimental Zoology, Columbia University 



Cloth, zoo pp., 8vo, $i.6o net 



"The author long ago won his spurs in this field, through his 

 unrivaled researches in the phenomena of regeneration; and he 

 has now proved himself a master of compilation- — selecting the 

 most significant experiments carried on in various countries, weigh- 

 ing them fairly, and summing up with a conservatism which is 

 perhaps the most valuable feature of the book. The thoroughness 

 and lucidity of the work make it serve three distinct purposes: the 

 intelHgent layman without any previous knowledge of the subject 

 may read and appreciate any part of it; the student of experimental 

 zoology will find it a veritable vade mecum; and the advanced 

 scientist will be glad to refer to the generous summaries of literature 

 relating to each subject." — Nation. 



"Professor Morgan has, however, done much sound and some bril- 

 liant work. In his special field, the regrowth of amputated parts and 

 the relation of this property to the general theory of evolution, his 

 experiments have become classic, and he is himself one of the first 

 authorities in the world. His own eminence in the field, combined 

 with a simple, straightforward style, and a just and sympathetic 

 appreciation of the work of other men, even when their opinions are 

 opposed to his own, render him especially well fitted to sum up the 

 general results of the new science. 



"This he has accomplished with marked success in the work before 

 us. He has succeeded in bringing together a large body of fact 

 without becoming dull; without being fatuously 'popular,' he has 

 been untechnical and clear." — Boston Transcript. 



Text-Book of Elementary Biology 



BY H. J. CAMPBELL 



Cloth, ismo, $i.6o net 



Experimental Morphology 



BY CHARLES BENEDICT DAVENPORT, Ph.D. 



Of Harvard University 



Cloth, xviii + 508 pp., illustrated, bibliographical index, 8vo, $3.^0 net 



Professor Davenport is known as one of the foremost mor- 

 pbologists and laboratory experimenters among American naturalists. 

 His well-known and valuable book, formerly issued in two volumes, 

 here appears bound in one volume. 



PUBLISHED BY 



THE MACMILLAN COMPANY 



61-66 Pifth Avenue, New Tork 



