1890. ] Proceedings of Scientific Societies. 497 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
U. S. National Academy of Sciences.— The following papers 
' were read at the meeting commencing April 1 5, 1890. 
1. The effects of the inhalation of Nitrogen, Nitrous Oxide, Oxygen, 
and Carbonic Acid upon the Circulation : with special reference to 
the Nitrous Oxides, Anzesthesia and Asphyxia ; H. C, Wood, presented 
by Dr. J. Billings. 2. On the Application of Interference Methods to 
Astronomical Measurements, A. A. Michelson. 3- Physiognomy of the 
American Tertiary Hemiptera, S. H. Scudder. 4. Totality of the 
Eclipse of 1889, December 22, D. P. Todd. Presented by the Home 
Secretary. 5. The Budding of Salpa considered in relation to the 
Question of the Inheritance of Acquired Characters, W. K. Brooks. 
6. Recent Advances Towards a Knowledge of the Fishes of the Great 
Oceanic Depths, G. Brown Goode and Tarleton H. Bean. 7- A System 
of Classification of Variable Stars, S. C. Chandler. 8. On the Spectrum 
of Metals, H. A. Rowland. 9. On the Cheapest Light, S. P. Langley. 
to. On the Relation of Secular Disintegration to certain Crystalline and 
Transitional Schists, R. Pumpelly. 11. On the Structure of the Green 
Mountains, R. Pumpelly. 12. The Interrelationships of the Ichthyop- 
sida, Theo. Gill. 
The following members were elected: George L. Goodale, Cam- 
bridge, Mass. ; Russell H. Chittenden, New Haven, Conn. ; Thos, L. 
Casey, Washington, D. C., and Richmond M. Smith, New York. 
On the evening of Wednesday, April 16th, the Henry Draper 
Medal was presented to Prof. H. A. Rowland, of Baltimore, Md. 
Prof. S. P. Langley resigned the office of Vice President, to take 
effect April 1, 1891. 
Brookville, Indiana, Society of Natural History. —Annual 
meeting March 28th, Mr. E. R. Quick in the chair. The following 
officers were elected for the ensuing year: 
President, C. W. McClure ; Vice-President, E. R. Quick; Secretary, 
R. M. King; Corresponding Secretary, H. M. Stoops ; Treasurer, A. 
W. Butler; Librarian, Edw. Hughes. Curators: Mammalogy, E. R. 
Quick; Botany, O. M. Meyncke; Ornithology, A. W. Butler ; En- 
tomology, C. W. McClure ; Geology, C. F. Goodwin ; Mineralogy, . 
G. R. King ; Archeology, H. M. Stoops ; Icthyology and Herpetology, | 
Joeph Fieber. 
. Nat.—May.—7. 
