Vol. LXIX. No. a DECEMBER, 1906
THE
POPULAR SCIENCE MONTHLY.
EDITED BY J. McKEEN CATTELL CONTKNTS
The Bogoslofs : President David Starr Jordan and George Archibald
Clark 481
The Development of the Telephone Service. Fred DeLand 490
The Jews : a Study of Race and Environment. Dr. Maurice Fishberg . 502
Physical Degeneracy or Race Suicide ? Sidney Webb 512
Waterway Defences of the Atlantic Coast. William J. Roe .... 530
The Simplification of French Spelling. Professor Brander Matthews . 539
The Value of Science. Professor H. Poincar^ 545
Vesuvius in the Early Middle Ages : Dr. Charles R. Eastman ... . 558
The Progress of Science :
The New Engineering Building of the University of Pennsylvana ; The Harveian Ora- tion, Scientific Items 567
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