THE 
AMERICAN NATURALIST 
VoL. XXXIV. December, 1900. No. 408. 
THE STUDY OF MAMMALIAN EMBRYOLOGY.! 
CHARLES SEDGWICK MINOT. 
Tuis article is intended to give a preliminary account of a 
Text-Book of Embryology, upon the preparation of which I have 
been working for a considerable period. The book is intended 
especially to meet the needs of the student of human anatomy, 
but it is hoped to render it suitable for use as a general intro- 
duction to vertebrate embryology. The distinctive aim of the 
work will be to direct the beginner in the practical laboratory 
study of mammalian embryology, guiding him through an intel- 
ligent examination of the external form and of the microscopic 
sections. 
The publication of Foster and Balfour's admirable Elements 
of Embryology gave a great impetus to the science, but it is, 
unfortunately, many years since the last edition of that work 
appeared (1883). Duval’s A//as is at present the most avail- 
able guide, but is too elaborate and costly to be within the 
reach of most students. It is a work which ought to be in 
every laboratory, for it is a fine monument of well-directed 
learned industry. Both of these works deal with the embryology 
1 Copyright, 1900, by Charles Sedgwick Minot. 
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