ere ed Proceedings of Scientific Societies, 491 
SCIENTIFIC NEWS. 
-ne promoters of the movement are sanguine of effecting a 
great change of sentiment relative to the destruction of our song- 
sters and insect-destroying birds for hat decoration. 
:0: 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
i NATIONAL ACADEMY oF SCIENCES, April 20-22, 1886.—The 
ollowing are the titles of the papers read at the session: 
The geologic age of the Equus fauna. By G. K. Gilbert. 
The Cowles electrical furnace. By T. Sterry Hunt. 
& Ne the phylogeny of the Batrachia. Ry E. D. Cope. 
r the Phylogeny of the placental Mammalia. By E. D. Cope. ' 
; The comet of Biela. By H. A. Newton. 
Areas of high barometric pressure over Europe and Asia. By Elias Loomis. 
The cockroach in the past and in the present. By S. H. Scudder. 
Oe the diathermancy of ebonite and obsidian, and on the production of calorescence. 
by means of Screens of ebonite and obsidian. By Alfred M. Mayer. p 
On the coefficient of expansion of ebonite. By Alfred M. Mayer. 
On the determination of the cubical expansion of a solid by a method which does 
Ma s calibration of vessels, weighings, or linear measure. By Alfred M. 
ey measures of absolute radiation. By Alfred M. Mayer. 
the geology of the region near Zacualtipan, Hidalgo, Mexico. By E. D. Cope. 
By Edward S. Morse. z 
uper-ordinal groups of fishes. By Theo. Gill s 
the absolute and relative wave-length of the lines of the solar spectrum. By H. 
A, Rowland. T $ 
o Fiatinous compound as additive molecules, W. Wolcott Gibbs. 
= € of magnetism on chemical action. By ‘Ira Remsen. fea 
ond and dumb of Martha’s Vineyard (continuation of research relating 
_ ancestry of the deaf}. By Alexander Graham Bell. ee. 
ble spectra. By S. P. Langley. os 
us Metamorphic rocks of California (by invitation). By G. F. Baker. > 
