VOL. XXXIV, No. 399° 
} 
4 
THE 
MARCH, 1900 
AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE 
I. On the Life History of ee Cornutus and Alternate Gener- 
P. CALVIN 
ation in Annelids 
II. Some Notes on RE E di Regulation i in Pada 
FRANK R. LILLIE 
III. rci on the San Marcos —— ae rathbuni 
Ww. A 
On +h 
P A 
CONTENTS 
sheha D. 
MENSCH 
ESE 
Vein and its Tributaries in the Domestic Cat (Felis domestica) 
CF. 
V. The North-American Jumping Mice 
VI. Fresh-Water Aquaria . 
VII. uem of North-American Terral eiai. VIII. The Isopoda, 
art I " HARRIET 
W. McCLURE 
RICHARDSON 
VII. eium of Send, Lüexbue: Aoii pir Payne’s New World — — 
Zoólogy, Koelliker’s Reminiscences, Degeneration of Duodenal Glands 
in the Cat, Greeley on Tide-Pool Fishes of California, Development 
of Brain Structures in 
Amia, Scapanorhynchus and Mitsukurina, The 
Lateral Line of the Toadfish, Greene on the Lateral Line of the Cali- 
fornia Toadfish, Absence of 
Retinal Pigment in the Dogfish, Pupa- 
Grafting in Moths, € Followed by Mitotic Cell Division, A New 
Grafts, Notes — suras Minnesota Plant 
Unattached Hydroid, 
Life, The Local Floras ee se England, Botanical Not 
ews 
BOSTON, U.S.A. 
GINN & COMPANY, PUBLISHERS. 
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PAGE 
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