96 The American Naturalist. [January, 
d. For Weigert’s method. 
e. For the temporary preservation of anatomic material. 
f. Perhaps for the preservation of aquatic vertebrates. 
g. For hardening material in which the blood vessels have been in- 
jected with colored gelatin. . 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
Boston Society of Natural History.—December 2d.—The fol- 
lowing communications were made: “The Early Services of Mr. 
Thomas T. Bouvé to the Society,” by Charles J. Sprague and James C. 
White; “ Mr. Bouvé’s Work in the Society Since 1870,” by Alpheus 
Hyatt; “Mr. Bouvé’s Work in Geology and Mineralogy,” by W. O. 
Putnam, “ Statement Concerning Some Recent Discoveries at Trenton, 
N. J., Bearing Upon the Early Presence of Man in the Delaware 
Valley ;” Prof. G. Frederick Wright,“ The Extent of Preglacial Erosion 
in the United States, and its Bearing on the Question of the Length 
and Date of the Glacial Period.’—Samurt Hensuaw, Secretary. 
American Philosophical Society.—December 18th.—Drs. W. 
H. Furness, 3d, and H. M. Hiller made a preliminary report on their 
explorations in Borneo and the Loochoo Islands. 
University of Pennsylvania Biological Club.—December 
7th. Program.—* Demonstrations of Some Mexican Plants,” Dr. John 
W. Harshberger; “ Demonstrations of Slides Showing Conjugation of 
Nuclei in the Intestinal Cells of Land Isopods,” Dr. E. G. Conklin. 
Reviews: Botanical, Dr. J. M. Macfarlane, Dr. H. C. Porter; Chemi- 
cal, Dr. Mary E. Pennington; Psychological, Dr. Lightner Witmer. 
Original Communications: “ Diseased Action and Senility, Considered 
in Connection with Biological Work,” Dr. J. H. Allen. 
December 21st Program.—Demonstrations: Slides showing deform- 
ation of nuclei in the intestinal cells of Land Isopods, Dr. E. G- 
Conklin. Reviews: Botanical, Drs. Macfarlane, Harshberger, Porter ; 
Chemical, Dr. Mary E. Pennington; Psychological, Dr. Lightner 
Witmer ; Pathological, Dr. Ferree Witmer. Original Communications: 
“The Native Dahlias of Mexico,” Dr. John W. Harshburger.—H. C. 
PORTER, Secretary. | 
