1028 Proceedings of Scientific Societies, [October, 
of bisexuality in the pond-scums (Zygnemacez), Charles E. Bes- 
sey ; The process in fertilization in Campanula americana, Charles 
R. Barnes; The structure of Glottidea pyramidata (Stim.) Dall, 
r. H. G. Berger; Coenostroma and Idiostroma, and the compre- 
hensive character of the Stromatoporoids, Alexander Windell; 
he song-notes of the periodical Cicada (Cicada septendecim L.), 
and the mechanism by which they are produced, C. V. Riley ; 
The periodical Cicada in Southeastern Indiana, Amos W. Butler; 
Some popular fallacies and some new facts regarding Cicada 
septendecim, C. V. Riley ; Proof that Bacteria are the direct cause 
of the disease in trees known as pear-blight, J. C. Arthur. 
Section G—Histology and Microscopy.—Photo-micrographs on 
gelatine plates for lantern projection, W. H. Walmsley; Photo- 
Micrography work with high powers, Professor T. J. Burrill; A new, 
cheap, useful and quickly constructed adjustable microtome, Chas. 
Porter Hart; Optical arrangements for Photo-micrography, and 
remarks on magnification, Romyn Hitchcock. 
Section H—Anthropology—A visit to the Siletz Agency, Rev. 
J. Owen Dorsey ; Permanence of early Iroquois Clans and Sa- 
chemships, Rev. W. M. Beauchamp; The remains at San Juan 
Teotihuacan, Amos W. Butler; Significance of Flora to the Iro- 
quois, Mrs. Erminnie A. Smith; A supposed natural alloy of 
copper and silver from the north shore of Lake Superior, in Min- 
nesota, N. H. Winchell; Exhibition of copper implements, W. C. 
yman. 
Friday, August 28th. Section E—Geology and Geography— 
On the Classification of the upper Devonian, Henry S. Williams; 
The Gas and Oil Wells of Northwestern Ohio, Edward Orton; 
The Loess and Drift-clays, Wm. McAdams; Discovery of fossil- 
iferous Potsdam Limestone, at Poughkeepsie, N. Y., William B. 
wig ` : 
Section F—Biology—On the parasites of the Hessian fly (Ce- 
cidomyia destructor Say), C. V. Riley; The mechanical injury to 
trees by cold, T. J. Burrill; Aquatic respiration in soft-shelled 
turtles (Aspidonectes and Amyda); A contribution to the physiol- 
ogy of respiration in vertebrates, Simon H. Gage and S. S. Phelps 
Gage; The presence or absence of underbasals in crinoids can 
be ascertained from the columns, Charles Wachsmuth; Further 
observations on the adventitious inflorescence of Cuscuta glomer- 
ata, Charles E. Bessey; On the phylogeny of the placental mam- 
: malia, Edward D. Cope; The structure of Glottidea pyramidata 
= (Stim.) Dall, Dr. H. G. Beyer. 
AI s in Dakota, William McAdams; Burial 
pmp of our aborigines, Henry Gillman; Ancient pictographs 
