1886.1 . Proceedings of Scientific Societies. OI7 
light of these and other facts, does not arise from polymorphism, 
but from the power of the larva to develop asexually. 
April 10.—Professor Heilprin gave an account of his collect- 
ing tour in Florida. Miocene strata were found at Rocky Bluff 
on the Big Manatee river. The rocks on both sides of the 
Caloosahatchie, until within fifteen miles of Lake Ochechobee, 
are literally crarnmed with fossils. The bottom of the lake con- 
sists of hard, clean sand. Eight or nine kinds of mollusks, two 
of fishes and a few annelids and crustaceans were all the fauna 
found in the lake. Vast wind-rows of dead fishes were found upon 
the seashore, owing to the severity of the winter, 
Mr. Potts stated that in a collection of fresh-water sponges 
' from Avalon, Newfoundland, made by Mr. A. H. McKay, he had 
found several new species of four or five genera. One species has 
both spindle-shaped and birotulate spicules, thus uniting two 
groups. 
May 4.—Professor Heilprin described two human vertebræ 
from Sarasota bay, Florida. The bones, imbedded in ferruginous 
sandstone, had become converted into limonite. The cavity which 
once contained the head could be traced, and the head was known 
to have been present not many years before. The deposit was 
Probably post-Pliocene, yet of great antiquity. 
„Mr. A. H: Smith referred to a log of hemlock that had been 
obtained, during railway excavations, at a depth of thirty feet from 
Sag in black earth which had once formed the bed of the 
laware, 
May 11.—Professor Heilprin showed that Professor Le 
i : ; å 
a Conte's previous views regarding Florida were based upon an in- 
_orrect reading of the published researches of the State geologist 
of Alabama. a 
Dr. Leidy read a communication from Dr. Gonzalez, of Du- 
_ “fa mode of treatment, since all antidotes yet tried had failed. __ 
„Dr. Leidy read an account given by Mr. E. A. Rau, of Beth- - 
ag: » Of a case of trichiniasis which resulted in the poisoning 
The whole family and the death of the mother and a daughter. 
ss Fe eaten was home-raised, and the animal showed no sign 
Of ill health. The meat was imperfectly cooked and had been fed | 
N 
upon for a-week. 
