Experimental Zoology 



By THOMAS HUNT MORGAN, Professor of Experi- 

 mental Zoology, Columbia University 



Cloth, 454 pp., 8vo, $2.75 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, 

 weighing them fairly, and summing up with a conservatism which 

 is perhaps the most valuable feature of the book. The thorough- 

 ness and lucidity of the work make it serve three distinct 

 purposes: the intelligent 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 

 brilliant 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 untechmcal and clear." Boston Transcript. 



The Protozoa 



By GARY N. CALKINS, Ph.D., Instructor in Zoology, 

 Columbia University 



Cloth, 347 pp., 8w, $3.00 net 



'The author has not aimed at putting forward an exhaustive, 

 severely scientific treatise upon the group in question. His work 

 may be described rather as a simple and intelligible introduction 

 to the study of the Protozoa and of the many fascinating biological 

 problems connected with, or illustrated by, this subdivision of the 

 animal kingdom, in such a way as to awaken the interest of the 

 beginner, no less than to strengthen the hands of the expert." 

 Nature. 



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