BY
RUSSELL H. CHITTENDEN,
PH.D., LL.D., SC.D.
DIRECTOR OF THE SHEFFIELD SCIENTIFIC SCHOOL OF YALE UNIVERSITY
AND PROFESSOR OF PHYSIOLOGICAL CHEMISTRY; MEMBER OF THE
NATIONAL ACADEMY OF SCIENCES; PRESIDENT OF THE
AMERICAN PHYSIOLOGICAL SOCIETY; MEMBER OF
THE AMERICAN PHILOSOPHICAL SOCIETY, ETC.
NEW YORK
FREDERICK A. STOKES COMPANY
1907
_Copyright, 1904_,
BY FREDERICK A. STOKES COMPANY