AMERICAN 
ATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE. 
MANAGING EDITORS: 
Props. E. D. COPE, Philadelphia, anp J. S. KINGSLEY, Boston. 
: ASSOCIATE EDITORS: 
_ Dr. C. O. WHITMAN, Chica Dr. C. E. BESSEY, 
Pror. C. 
Lincoln, Neb, 
M. WEED, iaia N. H. ga W.S. BAYLEY, Waterville, Maine, 
rN: LOCKINGTON, Rugby, England. 
THOMAS WILSON, Washington, 
Pror. g” A. ANDREWS, eee 
Vol. XXVII. MAY, 1893. 
CONTENTS. 
PAGE, 
RECENT STUDIES OF CARNIVOROUS PLANTS. asia—Polar Regions. . 
Jared G. Smith. 413 Geology and Pai. The Western Te 
land of Ecuador—Devonian Fossils from Manitoba 
—Jura and Trias at Taylorville, reecaye ates 
A NEw THEORY OF THE MECHANICAL EVOLUTION 
OF THE METAPODIAL KEELS oF DIPLARTHRA, 
š (Mustrated:) . a o, a J Li Wortman. 
a CLIrF-DWELLERS. (IUustrated.) 
: Clement L. Webster. 
Marine Pliocene Beds of the Carolinas—Geological 
News—General—Paleozoic — Mesozoic —Cenozoic, | 4 
New DISCOVERIES OF Fossit MAMMALIA OF Dan T yoan rk Ea Pe . 
: -SOUTHERN PATAGONIA. Florentino Ameghino. 
EDITORIALS.— The Geological Survey of Georgia— 
The Exhibition of eee sta Pro- 
tection i in New York, 
