
188y.] Proceedings of Scientific Societies. 109 
On some plants new to the State list —W. S. Blatchley. 
Method of embedding and staining delicate vegetable tissues.— 
Douglas H. Campbell. 
Germination of the macrospores of Isoetes.—Douglas H. Campbell. 
Determination of lower plant forms.—Stanley Coulter. 
Forest trees of Indiana.—Stanley Coulter. 
Morphology of Siphonophores.—Louis Rettger. 
Notes on Indiana butterflies. —Albert J. Woolman. 
Investigations on relation between the intensity of stimulus and re- 
action-time.—W. J. Bryan. 
The glacial geology of the Irondequoit region.—C, R. Duyer. 
Remarks on the remains of a giant beaver found near Winchester, 
Indiana.—Joseph Moore, 
Cremation.—Wm. B. Clarke. ý 
Most of the papers were read in full, but few by abstract or title, 
and the discussions were good. 
The total number of papers presented was 73. 
The following officers were elected for the ensuing year. 
President—T. C. Mendenhall. 
Vice-Presidents—O. P. Hay, J. L. Campbell, J. C. Arthur. 
Treasurer—O, P. Jenkins. 
The next meeting of the Academy will be held at Greencastle, Ind., 
at some time in the spring to be dètermined by the Executive Board. 
American Geological Society.— The following papers were 
read at the Toronto Meeting of the American Geological Society, on 
Thursday, August 29th, 1889 : 
- D. Dana.—Areas of Continental Progress in North America, 
and the Influence of those Areas on the Work Carried on in Them. 
« Progress’? is the progress in rock-making; the ‘‘Areas’’ are 
those into which the continent is naturally divided as regards geolog- 
ical progress ; and the ‘‘ Work ” is that of all the dynamical agencies 
concerned in the making of the beds in the rock series, including the 
biological agencies.—30 min. 
G. K. Gilbert—The Strength of the Earth’s Crust. 
It is believed by many students of dynamic geology that a district 
gradually loaded by sediment subsides, and that a district unloaded by 
degradation undergoes elevation, the process being quasi-hydrostatic. 
Certain observations in the basin of Great Salt Lake indicate that 
such results do not follow loading and unloading when the quantities 
involved are less than a certain amount.—3o min. 
