632 Proceedings of Societies. [ October, 
PROCEEDINGS OF SOCIETIES. 
Acapemy or Naturat Scrences, Philadelphia. — June 27th. The 
meeting was attended by Dom Pedro II., Emperor of Brazil, and his 
minister plenipotentiary, Senhor A. P. Carvalho de Borges. 
Dr. Leidy made a communication upon the structure and life of the 
Rhizopods. The formation of the shells of the Difflugians was described, 
and a number of forms were figured. , 
Professor Cope called attention to certain mammalian remains from 
the neighborhood of Santa Fé. The specimens exhibited belonged to 
the Mastodon productus, which must have been very abundant in that 
region. The speaker dwelt upon the peculiarities which distinguished 
it from Mastodon Ohioticus, and gave at length the characters of the 
dentition. } 
The three prominent types of mammals from the Eocene, Miocene, and 
Upper Miocene formations of the West weredescribed and illustrated by 
fine specimens of skulls of Loxolophodon cornutus, Symborodon acer, and 
S. altirostris. 
Professor Frazer described a collection of microscopic sections of 
igneous rocks, the peculiarities of which were exhibited by means of the 
screen and lantern. Certain Brazilian Dolerites were contrasted with 
others from York County, Pa. 
Dr. Horn placed on record a method of distinguishing sexes in the 
genus Amblycheila, depending upon the shape of the trochanters. 
July 11th. Mr. Gabb called attention to the use of borax as a sub- 
stitute for alcohol in the preservation of animal tissues. 
of fertilization of Campanula, which he believed to be entirely inde- 
pendent of insect agency. The mode of fertilization of the dandelion 
and chiccory was also described and illustrated. Both of these plants 
were considered self-fertilizers. 
Professor Cope spoke of the species of fossil dogs found in the Santa 
Fé marl. The vertebrates found in that formation now number thirty- 
two, including eleven species of Canis. ‘These are all extinct, with the 
exception of one species of wolf, the Canis cævis of Leiðy. This "a 
sidered to be 
believed to be identical with the living wolf, which was con 
specifically identical with the common dog. The specie 
originated in the Upper Miocene and persists to the present day: 
new form was described under the name of Oanis Wheelerianus. = 
relative size and other characters of the species heretofore 4 
were given. 
The number of species of fossil deer found in the forma 
of was increased from four to six, the two new forms being 
S mentioned 
tion spoken 
