THE 
AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES : ; 
IN THEIR WIDEST SENSE 
CONTENTS 
PAGE 
I. The Study of Mammalian Embryology . » à Professor C. S. MINOT 913 
Il. Origin of the Mammalia, III. opic tanis nit ger S ET 
Type essor H. F. OSBORN 
Tripartite 
i unt a E ee oa 
Growth Professor T. W. GALLOWAY 
943 
949 
IY. On the Variation of the Statoblasts of Pectinatella Magnifica Rae cr Sees 
from Lake i at Chicago ; Professor C. B. DAVENPORT $959 — 
N. A Soaling Stone Jar for Zodlogical Laboratories - .. J.B.JOHNSTON 969 
VI. Reviews: of Recent Literature: Anthropology, African African Masks and Secret iem 
(OVE Pabtioations Beosivoà 
BOSTON, , U.S.A. 
GINN & COMPANY, PUBLISHERS 
9-15 TREMONT PLACE = 
