General Physiology and its Relation to Morphology. C. O. WHITMAN........ 
rece in its General AEN H. L. RUssELI 
847, 
f Lateroversion of the Ophidian Heart (Illustrated). P. A. FISH. 
Woes as an Acquired ak erpai ALPHEUS HYATT...... 
a Eggs of Pityophis melanoleucus (Illustrated). J. P. MOORE 
he Genera of the Dipnoi Dipneumones, HOWARD AYRES 
Wied Intelligence, JAS. WEI 
Notes on a Collection of A from North Western Louisiana, and Harri- 
son County, Texas, L. W. VAUGHN 
Trenton and ceg mme Gravel Specimens Compared with the SA "9 
Refuse in America and Europe rapsi C.M 
Notes on E ppap insect, TD; AG 
The Color Variations of the Milk Snake (Illustrated). E. D. Cope............. 
EDITORIALS.— The Antivivisectionists in Pennsylvania,-26; The Coming 
Peary Expedition, 26; Dates of Issue of the NATURALIST for 1892, 
27; The Law of Priority in Nomenclature, 184; The Meeting of the 
Societies at Princeton, 135; The American Table at Naples, 136; ae 
Geological Survey of Inoi, 238; Reform in Orthography, 238; 
tality of the English Sparrow, 239; The American aa So. 
rnal o 
ogy, 360; A Preserve for New Zealand, 360; The Geological Survey 
of Georgia, 450; The Exhibition of Monstrosities, 450; Game Protec- 
tion in New York, 451; The ee of the American Philo- 
sophical Society, 542; A Museum for Chicago, 886; Duplication of 
Names for Postoffices, 886 ; Biography of American Botany, 887; 
he Zoologists and the Am n Association, maipi Specimens in the 
Mails, 979; The Glacialists? Macs ne, 980; The Bureau of Ethnol- 
gy ; The Pronunciation of Arkansas, ie, College and Univer- 
sity Periodicals, 1072; Appropriation for the Gypsy Moth Commission, 
1072; Dates of Issues of the NATURALIST for 1893, 1073. 
RECENT BOOKS AND PAMPHLETS.—28, 137, 240, 361, 452, 544, 650, 724, 808, 
889, 982, 
iv The American Naturalist. ; [Vol. XXVII, 
802 
1050 
RECENT LITERATURE.—The Apodi idae, 31; Darwin and After Darwin, 31; 
The Diseases of Personality, 33; Two Text-Books of Human Embry- 
ology, 140 ; Geological Survey of Texas, 1891, 142; Mineral Resour- 
ces of the United States, 1889 and 1890, 143 ; Memojrs of the PRS 
Academy of Sciences, Vol. V, 243; Brooks and Bruce on the E bry- 
ology of the Macrura, 243; Campbell’s Biology, "e laia 
Papers of the U. S. Geol. Surv., Neocene, 246; Cary on the Evolution 
of the Minnesota Valley, 365; Ridgwa way, on the Anatomy of the Hum- 
ming-Birds and Swifts—A Rejoinder, 367; Beddard’s Animal Colora- 
Vols. I and II, 455; The Earth’s Hi story, 456; Wright’s Light, 496; 
Evolution of the Colors of North American Land Birds, 547 ; Wright’s 
Man and the Glacial Period, 550 ; Some Recent Books on B Bacteriology, 
554; Report on the Fish and Fisheries of the United States for 1888, 
