1891.] Proceedings of Scientific Socteties. 301 
of Vigo Co., Ind., W. S. Blatchley; The Death of Salmon After 
Spawning, D. S. Jordan; The Fishes of the Upper Columbia and the 
Shoshone Falls, D. S: Jordan ; Eels of America and Europe (by title), 
. S. Jordan and B: M. Davis; Food Habits of the Blue Jay, C. W. 
Hargitt; Notes on Hydra fusca, C. W. Hargitt ; Acrididæ of Vigo 
Co., Ind., W. S. Blatchley ; On a Bird New to the State Fauna, W. S. 
Blatchley; On Cnicus discolor as an Insect Trap, W. S. Blatchley ; 
Relation of the Number of Vertebræ in Fishes to the Temperature of 
Water, D. S. Jordan; Notes on Indiana Mammals, B. W. Evermann 
d A. W. Butler; Audubon’s Old Mill at Henderson, Ky., B. W. 
Evermann ; The Range of the Evening Grosbeak in the Winter of 
1889—90, Amos W. Butler ; Carolina Parakeet in Indiana, Amos. W. 
Butler ; The Colors of Sounds, Gustaf Kartsen ; The Colors of Letters, 
D. S. Jordan ; A List of the Orthoptera of Illinois, with descriptions 
of new species and observations on the songs and habits of little-known 
species (by title), Jerome McNeill; Description of a New Æsthesio- 
meter, Wm. Bryan; Researches on the Tactual Perception of Dis- 
tance, Wm. Bryan ; Researches on Reaction Time, Wm. Bryan ; Fishes 
of the Wabash Basin, B. W. Evermann and O. P. Jenkins; Hypnotism, 
W. B. Clarke. 
Addenda.—Notes on Distribution and Habits of Argynnis diana, S. 
G. Evans ; Exact and Approximate Formule for Calculating the Force 
at Any Paine i in the Plane of a Circular Circuit Conveying an Electric 
Current, Thomas Gray ; Some Data as to the Resistance to Cutting of 
Metals, Thomas Gray ; Description of a Powerful Electro-Magnet, with 
preliminary determination of its magnetic field, C. Leo Mees ; Con- 
tinuation of Experiments in the Change of Density of Metals Under 
Stress, C. Leo Mees; An Apparatus for Determining Strength of 
Electric Currents in Absolute Measure, Thomas Gray; Specimeps of 
Diagrams Obtained in Testing Iron and Steel, Thomas Gray; The 
Relative Magnetic Resistance of Air p Iron, Thomas Gray; On 
the Solution of the Equation du = R Thomas Gray. 
The officers for next year are: President, O. P. Hay; vice presi- 
dents, J. L. Campbell, J. pai W. A. Noyes; secretary, A. W. 
Butler ; treasurer, O. P. Jen 
American Physiological Society.—The annual meeting of the 
American Physiological Society was held on December 3oth, T 
the Harvard Medical School, Boston. The following papers 
presented: On the Growth of Children, Studied by Galton’ s Method 
of Percentage Grades, H. P. Bowditch; A Contribution to Our 
