1034 Proceedings of Scientific Societies. [ December, 
eptember 17.—Professor Cope communicated a paper, entitled 
“On Some Mammalia of the Lowest Eocene of New Mexico.” 
October 7.—Professor J. J. Stevenson communicated through the 
Secretary as follows: “ Notes on the Coal-field near Cafion City, 
Colorado. Notes on the Quinnimont coal group in Mercer Co., W. 
Va., and Tazewell Co., Va. By John J. Stevenson, Professor of Geol- 
ogy in the University of the City of New York. Professor Cope ex- 
hibited a very perfect lower jaw of a marsupialoid type with carniv- 
orous characters from New Mexico. On splitting the jaw he found 
beneath a genuine and perfect marsupial fourth premolar, a con- 
cealed perfect successional tooth of carnivorous type. In front of it 
was another and smaller concealed successional tooth of the same 
type. Henamed the animal 77tisodon quivirensis. Professor Cope 
exhibited, also, a tooth of an animal from the Lower Eocene of New 
Mexico, the importance of which lay in the fact that proved the con- 
tinued existence of the Jurassic (Purbeck) Plagiaulax type through 
the Cretaceous to Tertiary times. He names the Lower Eocene 
form Ptilodus mediavus. 
October 21.—Professor Haupt exhibited specimens of natural 
terra cotta produced by spontaneous combustion in the lignite 
of the Badlands, and used for ballasting the Northern Pacific . 
R. Mr. Lesley exhibited a recent completed map of the Bal 
Eagle mountain and Birmingham hills in Blair and Boating’ 
counties, Pa., drawn by E. B. & O. B. Harden, for the dead Se 4 
explaining the difficult structure of the Sinking Valley fau ‘i 
anticlinal, &c. Mr. Lesley read “ Notes on a possible Adite ele- 
ment in the early history of Egypt.” 
Minpesex InstituTeE, Mass., Sept. 7,—A free public exhibition 
of native autumn flowers was given. Among the novelties ari 
was Solidago bicolor, var. concolor from Malden, collected | y 
Henty L. Moody, who was also fortunate enough to find, Sia 
over the county line and in Essex county, Pedicularis lanceola is 
Michx., a most interesting discovery for this region. r. ie 2 
hock exhibited Echium vulgare from Summerville. The co the 
tion of Asters and golden rods was particularly fine, cone . 
unfortunately hot weather prevailing at the time, and the ee a 
exhibition creditable to the Institute and to the ladies who ¢o 
tributed so much towards its success. Taternal 
Sept. 14.—Mr. Davenport read a paper on “Some Inte dis 
Visual Phenomena,” which was followed bya itibst inteees ea 
cussion in which Messrs. Moody, Gleason, Dame, Frohock, 
lins and others participated. 
_Bosron Society or Naturat History, October 19.—Pr poe 
_ Hyatt discussed the formation through disease of movable Lith oe 
_ in lobster claws; Mr. N. F. Merrill read a paper on the 4 re K 
eo. niet he of the Survey of the Fortieth Parallel, an ©™ 
ig ‘ 
E. Wadsworth gave some items relating to the Geology ° - 
™ Mass ssachuse : : 
oe i 
