1886. ] Froceedings of Scientific Societies. — 581 
Knowlton, Additions to and changes in the Flora Columbiana for 
188 
April 3—Communications: Dr. Frank Baker and. Mr. J. L. 
Wortman, Recent investigations into the mechanism of the elbow- 
joint; Mr. J. B. Smith, Some peculiar secondary sexual charac- 
ters in the Deltoids, and their supposed function; Dr. C. Hart 
Merriam, Contributions to North American mammalogy—Ill. 
Description of a new sub-species of a gray squirrel; Dr. R. W. 
Shufeldt, U. S. A., Some early and as yet unpublished drawings y 
of Audubon. 
M 
Dall, 1. On the attachment of Lingula, with exhibition of ` 
=a 
New YORK ACADEMY OF ScreNncEs, March 15, 1886.—Recent 
Progress in chemistry, by Dr. H. Carrington Bolton, of Trinity — 
College, Hartford, Conn. 
__ March 22.—Significance of flora to the Iroquois (with gram- * 
matical notes), by Mrs. Erminnie A. Smith. Si 
March 29.—Theories concerning the protective influence of —_ 
mitigated virus, by Mr. Lucius Pitkin. o 
_ April 5.—Geological notes in Western Virginia, North Caro- 
lina and Eastern Tennessee (illustrated with specimens), by Dr. 
N. L. Britton. x 
_ April 19.—Mineralogical notes (a, On the hardness of a Bra- 
zilian diamond ; 4, A fifth mass of meteoric iron from Augusta | 
county, Va; c, Asteriation in garnet), by Mr. Geo. F. Kunz oo: 
Minerals of Staten Island, by Mr. B. B. Chamberlin. ie 
_ April 26—On the variation of decomposition in iron pyrite s : 
Its cause, and its relation to density, by Dr. Alexis A. Julien. — 
ay 3.—Review of the fossil fishes of North America, with 
notice of some new species, illustrated with specimens and lantern 
Mews, by Dr. J. S, Newberry. os 
_ Boston Soctety oF NATURAL History, March 17, 1886.—Dr. 
C. C. Abbot described the habits of the white-footed mouse; 
Professor Wm. Trelease read a paper on the North American 
Species of Thalictrum (meadow rue); Professor W. T. Sedgw c 
