850 Proceedings of Scientific Societies. [Aug., 1884 i 
‘ 
tory, by P. W. Sheafer, were read. Mr. Lesley exhibited 
models of the Nittany valley and Bald Eagle mountain, and 
of the Jones mine, made by Mr. Harden. Dr. Hunt gave an 
account of his examination of the Jones and other iron 
` mines, and assigned them all to the horizon of H. D. Rogers 
primal slates, though they lie in immediate contact with the Trias. 
Dr. Frazer said that facts show that some of the mines penetrate 
the Trias, yet the triassic iron-ore deposits may be merely the 
redeposited detritus of more extensive primal slate iron ores. 
ay 2.—Mr. Phillips made a communication “Ona s 
Runic inscription near Yarmouth, N. S.,” and exhibited a pho — 
tograph and a squeeze from it. Mr. Ashburner exhibited recently 
printed sheets of cross sections made by the Geological Survey — 
in Schuylkilland Lucerne counties, and explained some of the — 
peculiarities of structure. 
PHILADELPHIA Acapemy oF Natura Sciences, Feb. 2l— — 
Mr. Meehan described an abnormal Halesia tetraptera, with 
separate petals and leaves like those of the apple. The plant — 
grew under similar conditions to numerous other normal e 
and was the offspring of the same tree. Mr. Lockington consid- 
ered this a case of reversion. Professor Heilprin exhibited spèc — 
mens of carboniferous fossils, with Phillipsia, and along with them — 
an ammonite, the oldest yet discovered, which he named Amn i 
nites parlat. : ie 
Feb. 28.—Dr. Leidy directed attention to specimens of a 
toma from the mouth of the alligator. Distoma oricola nbag 
posed as the name. Examples of Filaria horrida, from the pa 
of the American ostrich, were shown, and also some filaria fom 
the marsh owl. The last accorded so closely with the 4wa ae 
biata of the black stork of Europe and North Africa, that ry : 
speaker believed them to be the same species. Dr. Rane nave ig 
tailed the results of experiments upon the digestion of bo! wo 
unboiled milk, and announced his conclusion that the lae tiie’ 
the advantage as a nutrient. ee Aji 
March 3.—Dr. Leidy stated his belief that the whee others 
es k ; himself 
lus dictyophora, and Cupelophagus described by ħi the distinctness 
were really but one species. Miss Foulke maintained 
of the forms described by Forbes and Meznichow, an water 
Trachelius leidyi, a ciliate infusorian found in Schuylkt of ob 
Dr. McCook described the cocoons of the few asi Geis: 
weaving spiders which make more than one cocoon. crispala 
_ March 13.—Mr. Ford exhibited specimens of Zirh Me Soa 
found in driftwood at Atlantic City. Professor Heilpr r Tryon = 
the finding of Porpita linn@ana near Cape May, we City. 
remarked that in 1876 he found an example at 24 sponge 
Mr. Potts stated that the stems of Urnatella on the oF tp show 
crust collected by him at Fairmount had commen To 
signs of life. 
