VoL. XXXIII, No. 396 
be dita ad Hep 
THE 
AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE 
CONTENTS 
Facts and Theories of Telegony. . . `.  . HERMON C. BUMPUS 
A Note on the Psychology of Fishes. . . EDWARD THORNDIKE 
Collops EARE as an Roes of the Colorado Potato 
Beetle . C. E. MEAD 
The Rey Cucrying Habit of Zaitha : : FLORENCE W. SLATER 
Relation of the Chirping of the Tree Cricket oe niveus) 
to Temperature A : ROBERT T. EDES 
Regeneration in the Hydromedusk: € Gonionemus vertens T. H. MORGAN 
Salvia coccinea, an Ornithophilous Plant... RICHARD c. McGREGOR 
Synopses of North-American Invertebrates, E The- 
Astacidæ — i : W.P. HAY 
Reviews of Recent Literat terature: PE Biology. A hana Vitalism 
Praxis und Theorie der Zellen- und Befruchtungslehre, Daveipares 5 
Statistical Methods, Former Existence of an Antarctic Continent — 
Zoölogy, Accessory Bladders of Turtles, Osteology of Percesoces, Starks 
on the Relationships of ey Sra The Peripheral Nervous ‘System oF 
Bony Fishes, Reactions of Entomostraca to Light, Embryology of the 
Cladoceran Penilia, Artificial Peden in the Sea Urchin, Notes _ 
— Botany, Botanical Papers at the British Association, A New Book on 
tag The Botanists of Philadelphia, An I — gta Ada, 
‘lora of New asm Botanical Not 
BOS TON, U.S.A. 
DECEMBER, 1899 
988 
GINN & COMPANY, Dan eee 
