CONTENTS 
Page 
Zoology. — ^Restoration of Vitality Through Conjugation , By Gary N, Calkins 95 
Geology. — ^Falkiandia By J, M, Clarke 102 
Mathematics. — On the Real Folds of Abelian Varieties . . , By S, Lefschetz 103 
Mathematics. — Covariants of Binary Modular Groups By Oliver Edmunds Glenn 107 
Mathematics. — ^The General Solution of the Indeterminate Equation: 
Ax + By + Cz + . . , r By D.N. Lehmer 111 
Archaeology. — ^The Archaeology of the Southwest: A Preliminary Report 
By N. C. Nelson 114 
Physics. — An Adjustment in Relation to the Fresnel Coefficient. By Carl Barus 120 
Genetics. — Piebald Rats and the Theory of Genes . . . . By W. E. Castle 126 
Botany. — Bud Variation By A. B. Stout 130 
Agriculture. — The Growth Rate of an Annual Plant Helianthus 
By H. S. Reed and R. H. Holland 135 
Chemistry. — On Some Metallic Derivatives of Ethyl Thioglycollate . . . 
By Charles A. Rouiller 145 
Physiology. — An Analysis of the Relation Between the Temperature and the 
Duration of a Biological Process .... By Selig Eecht 146 
