Jope. | 580 
80 as to present great difficulties in placing the cross wires on it, but as 
the mean of these deviations, great as it is, is very nearly the two first 
recorded, I have proposed to let the late observations stand, and rate 
their value as 1 each, that of each of the first two being called 5. 
This would give the value of this line as............. 929 34/ 49.8” 
A series of careful observations in the D lines and 
the F line, gave as a mean of the former.......... 919 527 380! 
POMC tOr the latter ti edia ss eiken ss eo eeek aes 95° 13/ 0/ 
The angular distance between D and F........... Se) 7203 380% 
A curve was projected on the plan now generally adopted by observa- 
tions on some ten lines, and by reference to this parabola, the mean length 
of the green line was found to be 563. 
It would correspond to 66 of Roscoe or 176.88 Kirchoff, Lines in Rb, 
and Cs, and Ba, lie very near it, but none exactly coincides with it, nor 
#3 there any absorption line in the Solar Spectrum which does. 
NOTICE OF PROBOSCIANS FROM THE EOCENE OF SOUTHERN 
WYOMING. 
By Epw. D. Corr. 
(Telegram dated Black Buttes, Wyoming, August 17, 1872, read by the 
Secretary at the meeting of the American Philosophical Society, Septem- 
ber 20th, 1872.) 
Ihave discovered in Southern Wyoming the following species : Loxo- 
LOPHODON, Cope. Incisor one, one canine tusk ; premolars four, with 
one crescent and inner tubercle ; molars two ; size gigantic. L. cornutus,; 
horns tripedral, cylindric ; nasals with short convex lobes. TL. Surcatus, 
nasals with long spatulate lobes. IL. pressicornis, horns compressed sub- 
acuminate. 
(Signed) EDWARD D. Corr, 
U. S. Geological Survey. 
[Note by the Secretary.—The above telegram was so badly transmitted 
by the operators as to be read with difficulty, and the precise forms of the 
specific names could not be certified until the return of Prof. Cope from 
the field. ] 
