1296 Proceedings of Scientific Societies. [ December, 
i 
endostyle of the branchial sac, in Salpa, throws out a supply of i 
mucus which covers the surface, and in which nutritive particles, 
finding their way into the animal, are imbedded. The food is 
carried back by cilia, and the mucous sheet is wound up into a ; 
thread which can be traced into the cesophagus, and thence into 
the stomach. This mucous exudation Dr. Dolley believes tobe 
identical with the amæœboid cell which has been described as 1 
taking uP the nutritive particles and passing them on to the tis- 
sues. Dr. N. A. Randolph described a e for the detection of l 
small pa ii of peptones in solutio 3 
April 24.—Dr. Leidy called best to a discovery of fossil ya 
remains of mammals in Florida, indicating the existence of a 4 
formation of later Miocene or Pliocene age differing from those 
before known, , Though mostly in fragments, the fossils exhibit 
no appearance of being water worn or abraded by friction, 
Among the remains were those of a mastodon, also of a rhinoceros 
rather shorter than the existing species, bones of a llama, a tapir | 
and of a large ruminating animal exceeding in bulk the Irish 
elk. Professor Heilprin stated that rock fragments received from 
Mr. Willcox contained six or seven genera, and specimens of 
microscopic Paludina were associated with them. These mig 
indicate the presence of fresh-water swamps in ancient Florida, or 
the emptying of a river into the sea. 
NaTIONAL ACADEMY OF Sciences, Newport, R. I., Oct. 14, 15, 
and 16, 1884.—The following papers were read: 
On the columella auris of the Pelycosauria. By E. D. Cope. 
The brain of Asellus ep the eye form of Cecidotæa. By A. S. Packard. 
On the theory of atom hp Ww bbs. 
On the complex pay pinky By Wo topes Gi bbs SR 
Notice of Muybridge’s Experiments" on the motions of animals by instantaneous PhO” 
to: Fairman Roger 
ography 
Notice of Gaali f aiioa engine. By Fairman age 
On the Thinolite of Lake Lahontan. E. S. Dan 
On the Mesozoic coals of the sae By. R. Pu mpelly. 
On the work of the northern transcontinental survey. By R. Pu we 
The grasses mechanically injurious to live stock. By Wm. H. Brewer 
On gravitation survey. By C. S. Peirce. 
On minimum differences of sensibility. By C. 5. Peirce and J. Jastrow. 
Researches on Ptolemy’s Star-Catalogue. By C. H. F. Peters L 
e the operations of the United States geological survey. By J. W. Powel 
e motion of H Asa all. 
Sair on the iiia of the gates peoples of America (by request). By B 
ylor, an 
Some results of the exploration of the deep sea beneath the eeel Stream, pe 
S. Fish Commission steamer A/éatross during the past er. l 
Verrill. 
Recent popa in explosives. By H. L 
On an experimental composite photograph - ae Members of the Academy. | 
Pumpelly, 
Report on meridian work at Reterehes D W. Valentiner. 
On methods of eastern archery. By Edward S yag 
APPALACHIAN Mountain CLUB.—Oct. ree F 
Professor George Davidson entitled “ Aea of the V 
