Front Matter
p. 0
Article description | Article Full Text PDF (1181KB)

Studies in Human Inheritance. XXII, The Inheritance of Congenital Pyloric Stensosi
Snyder, Laurence H. pp. 49-50
Article description | Article Full Text PDF (142KB)

Book Notices
p. 50
Article description | Article Full Text PDF (56KB)

Structure and Relationship of Cincinnatian Cyrtocerina
Flower, Rousseau H. pp. 51-64
Article description | Article Full Text PDF (2726KB)

Book Notices
p. 64
Article description | Article Full Text PDF (119KB)

Photoperiodic Aftereffects in Ipomoea
Greulach, Victor A. pp. 65-73
Article description | Article Full Text PDF (1409KB)

Book Notices
p. 73
Article description | Article Full Text PDF (60KB)

Third Annotated List of Phymata Prey Records (Phymatidae, Hemiptera)
Balduf, W. V. pp. 74-78
Article description | Article Full Text PDF (410KB)

A New Genus (Deltorynchus) and Two New Species of Leafhoppers (Homoptera Cicadellidae) from Mexico
DeLong, Dwight M. pp. 79-80
Article description | Article Full Text PDF (142KB)

Staining Inulin Crystals in Plant Tissues
Blaydes, Glenn W. pp. 81-82
Article description | Article Full Text PDF (199KB)

A Device for Observing Living Fish Embryos at Controlled Temperatures
Price, John W. pp. 83-85
Article description | Article Full Text PDF (288KB)

Book Notices
p. 86
Article description | Article Full Text PDF (126KB)

On Some American and Oriental Earthworms. Part I
Gates, G. E. pp. 87-98
Article description | Article Full Text PDF (1165KB)

Back Matter
p. 999
Article description | Article Full Text PDF (1155KB)