Page:Popular Science Monthly Volume 69.djvu/589

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Vol. LXIX. No. 3 SEPTEMBER, 1906

THE

POPULAR SCIENCE MONTHLY.

EDITED BY J. McKEEN CATTELL CONTENTS

The Value of Science. M. H. Poincare 193

Discontinuous Variation in Pedigree-cultures. Dr. D. T. MacDougal . 207

America and Seismological Research. Dr. William Herbert Hobbs . 228 Immunity in Tuberculosis. Dr. Simon Flexner 229

The Protection of the Alluvial Basin of the Mississippi. Robert Mar- shall Brown ... 248

The Jews, a Study of Race Environment. Maurice Fishberg .... 257

The Development of Mechanics. Dr. S. E. Slocum 268

Diamonds and Carbons in Brazil. H. W. Furniss 272

Shorter Articles :

Sigma Xi:M.B 281

The Progress of Science :

The Bureau of Education ; Professor Mendeleeff ; Appropriations for the Depart- ment of Agriculture ; The Will of Alfred Beit ; Scientific Items 283

THE SCIENCE PRESS

LANCASTER, PA. GARRISON, N. Y.

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copykight, 1906, bt the science press