AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE. 
MANAGING EDIT 
Prors. E. D. COPE ann J. S pE 
j ee a EDITORS: ; 
Dr. C. O. WHITMAN, . C.-E, BESSEY, _ THOMAS WILSON, ; 
Pror. C. M. WEED, Pror. W. S. BAYLEY, Pror. E.-A. ANDREWS. — 
J ANUARY, 1893. 
CONTENTS. 
PAG 
Gases IN Livinc Prants. (To be continued.) 
Arthur. 
i HEAPS. oF THE ST: Tii Kiven, 
mic nae ee OF CHALD 
ued.) parsen 
FLIGHT OF erh (Mlustrated. = 3 Lanéaster, 
— as ai San in Penn 
Com Pea Expedition ;— 
Senet ofi issue of M Naturalist for 1892. 
Embryology.—Gastrulation p ure 
Darwin, $ im Aequoria cise alea å 
Frit-FI ao rh 
and P Pelentogy On 1 the Formation of $ iere al — Notes on eS 
ortheastern Alabama—The pean Birds—A Nest Buldi ing Frog Hore 
a of South Africa— eens as Ptrerodactyls— kaer 
eral— onl 
jal News, General- aleozoic Mesozoic— a : 7 ae at ar E thn ogy Leg endary Evo 
| on of che Nayajo Indians. . 
aey a nd Patregrap iy. y — The Origin and ` PROCEEDINGS OF santas Societies, 
Petr eapi ical Ne ws—A New Occur- | Sctentiric New 
ot Pe seat News—Mineral ~ RECORD OF Noita Maske ZooLocy 
PHILADELPHIA, yU. S A. 
BINDER & KELLY, 
Oe ano 520 MINOR STREET. > 
