CONTENTS 
Page 
Genetics. — Calculating Ancestral Influence in Man 
By Harry H. Laughlin 235 
Physiology. — The Effect of Anesthetics on Living Cells 
By Grace Medes and J. F. McClendon 243 
Geology. — A General Sinking of Sea-Level in Recent Time 
By Reginald A. Daly 246 
Genetics. — A Note on the Human Sex Ratio By C. C. Little 250 
Physics. — The Existence of Homogeneous Groups of Large Ions 
By 0. Blackwood 253 
Chemistry. — The Relation Between the Iso-Electric Point of a Globulin 
and Its Solubility and Acid Combining Capacity in Salt Solution 
By E. J. Cohn 256 
Physiology. — The Carbon Dioxide: Heat Ratio in Cattle 
By H. P. Armsby, J. August Fries, and Winfred W. Braman 263 
Mathematics. — On Kummer's Memoir of 1857 Concerning Fermat's Last 
Theorem By H. S. Vandiver 266 
Physics. — ^An Improved Form of High Tension D. C. Apparatus 
By D. L. Webster 269 
Zoology. — The Effect of the Concentration of Nitrates on the Reducing 
Powers of Bacteria By R.W. Glaser 272 
I 
