1142 Proceedings of Scientific Societies. [Nov., 1885. 
June 30.—Dr. H. C. McCook gave an account of the life-his- 
tory of the seventeen-year locust. . 
Professor W. B. Scott presented for publication an article upon 
Cervalces americanus, the fossil deer, from the Quaternary of New 
Jersey. 
July 14.—Mr. Chas. Morris, referring to a criticism upon his 
recently published paper on the development of the hard parts of 
fossils, stated that the usually received idea of the organic origin 
of Archzan limestones was but an opinion. At.the present time 
many springs were depositing carbonate of lime mechanically, 
and it is possible, and even probable, that the Laurentian seas 
contained as great an excess of this salt as do these modern 
springs. Professor T. Sterry Hunt is of this opinion, and con- 
siders the phosphates as also of mechanical deposition. Inor- 
ganic chemistry was probably much more active at that period 
than now, and reactions may have taken place of which no trace 
remains except in the conditions of these early strata. 
July 28.—Mr. G. H. Parker described the anatomy of the Ce- 
cropia moth. The proboscis is small and the cesophagus thread- 
like, indicating that the imago takes little nourishment. The 
speaker stated his conviction that the three glands which pour a 
secretion into the oviduct, and the function of which was by a 
recent writer said to be unknown, secrete an adhesive material 
which serves to secure the eggs to the object on which they are 
deposited. 
Linn#An Society, Lancaster, Pa., June 27.—There were a 
large number of donations to the museum, among them a speci- 
men of the nest of the Tarantula, containing the insect, from 
California, by Abram Summy ; and the habitaculums of the Cicada 
from the Moravian burying-ground, donated by S. M. Sener. 
They are not as perfect as those secured in 1868 on the premises 
of George Hensel. This is perhaps owing to the character of the 
soil. Those of the former year were found in a soil of clay and 
sand, whilst those in the burying-ground were in a dark, loamy 
soil. This is an interesting confirmation of an observation that 
had heretofore never been recorded except in reference to Lan- 
caster city, 
