602 Proc. Sci. Societies & Selected Articles in Scien. Serials, [ Sept. 
great epidemics were of the same nature, and if that were cor- 
rect there could be few forms of life of more importance than 
those in the limits of the visible, which he had been describing.” 
10: 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
APPALACHIAN Mountain CLuB, June 11.—Mr. C. W. Folsom 
read a paper entitled Notes on elementary surveying for amateurs. 
Mr. J. B. Henck, Jr., exhibited and described several forms of 
pedometer, including the five dollar American pedometer. 
July 9.—The seventh field meeting convened at the Crawford 
House, N. H. The meeting was called to order by Prof. William 
H. Niles, Cambridge, Mass., president of the club. A paper was 
read by Prof. Charles E. Fay, of Boston, on Mount Carrigan, to 
the summit of which a path had just been completed by the 
club. (Members of the club conducted a party from the Institute 
of Instruction to the summit of Mount Carrigan July roth.) 
Prof. Hitchcock, of Dartmouth College, spoke on the geology of 
the White Mountain Notch. F. V. Hayden, U. S. geologist, 
spoke on the White and Rocky mountains, and Prof. F. W. 
Clark, of Cincinnati, on North Carolina and Tennessee mountains 
and scenery. 
-O 
SELECTED ARTICLES IN SCIENTIFIC SERIALS. - 
AMERICAN JOURNAL OF SCIENCE AND Arts.— July. Silurian 
formations in Central Virginia, by J. L. Campbell. Extinct vol- 
canoes about Lake Mono and their relations to the glacial drift, 
by J. LeConte. (These volcanoes were active since and probably 
before the glacial period.) Recent additions to the marine fauna , 
of the eastern coast of North America, by A. E. Verrill. Notice 
of a new Jurassic mammal, by O. C. Marsh. On the Hudson 
river age of the Taconic schists, by J. D. Dana. 
PsvcuE. — July. Pupation of the Nymphalide, by W. H. 
Patton. : 
ZOOLOGISCHER ANZEIGER.—June 9. Keller on the embryology — > 
of the sponges (Chalina). Benecke on the maturation and fertili- 
zation of the eggs of the bats. 
Tue GeoLocicaL MacGazine.—June, On recently discovered 
teeth of the musk ox (Ovibos moschatus) at Craybow, Kent, by 
W. Davies. The Glacial period in Eastern America, by C. H. 
Hitchcock. The Till in New England, by W. Upham. 
CANADIAN NaturRAList.—June 23. A Canadian Pterygotus, by 
= J-W. Dawson. Meebius on Zozodn canadense, by J. W: Dan oe 
