1893.] Proceedings of Scientific Societies. 585 
PROCEEDINGS OF SCIENTIFIC SOCIETIES, 
National Academy of Sciences.—The following papers were 
read at the meeting commencing April 18, 1893: On the Systematic 
Relations of the Ophidia, E. D. Cope; Biographical Memoir of Gen- 
eral Montgomery C. Meigs, H. L. Abbott; On the Nature of Certain 
Solutions, and on a New Means of Investigating Them, M. C. Lea; 
The Relations of Allied Branches of Biological Research to the Study 
of the Development of the Individual, and the Evolution of Groups, A. 
Hyatt; The Endosiphonoidea (Endoceras, etc.), considered as a New 
Order of Cephalopods, A. Hyatt; A New Type of Fossil Cephalopods, 
A. Hyatt; Results of Recent Researches upon Fossil Cephalopods of the 
Carboniferous, A. Hyatt; Biographical Memoir of Julius Erasmus 
Hilgard, E. W. Hilgard; Monograph of the Bombycine Moths of 
America, North of Mexico: Part I.—Notodontide, A. S. Packard; 
Intermediary Orbits, G. W. Hill; The Relations Between the Statis- 
tics of Immigration and the Census Returns of the Foreign-born Pop- 
ulation of the United States, Richmond Mayo-Smith ; Statistical Data 
for the Study of the Assimilation of Races and Nationalities of the 
United States, Richmond Mayo-Smith ; Telegraphic Gravity Deter- 
minations, T. C. Mendenhall ; Comparison of Latitude Determinations 
at Waikiki, T. C. Mendenhall; A One-volt Standard Cell; H. S. Car- 
hart (introduced by T. C. Mendenhall); Fundamental Standards of 
Length and Mass, T. C. Mendenhall; Peptonization in Gastric Diges- 
tion, R. H. Chittenden; Helen Kellar, Alexander Graham Bell; On 
a Potentiality of Internal Work in the Wind, S. P. Langley; On a 
Bolograph of the Infra-red Solar Spectrum, S. P. Langley . 
No election of members took place. The following were elected 
foreign correspondents: Tissandier, ere Paris; Rammelsberg, 
chemist, Berlin ; Ludwig, physiologist, Leipzig. 
Boston Society of Natural sie G aie follow- 
in rs were read: Mr. J. B. Woodworth : Traces of a Fauna in 
the Cambridge Slates; Mr. Charles P. Bowditch: Ruins of Central 
America. The annual meeting was held May 3d. The following 
. paper was read: Dr. R.T. Jackson—Notes on the Development of 
Palms. SAMUEL HENSHAW, Secretary. 
