relating to the Mountains of the Moon. 521 
Mons Armenia (near Taurus) projected 31 "40 6 = 
36,43 miles; lm .= 38 miles nearly, and the height 
two-thirds of a mile. 
Mons Leucopetra 34 ;/ 479 or 40 miles; 1*1 = 41,4 
miles, and the perpendicular height three quarters of a 
mile. 
There was a very fine fhade of a high rock near it, 
which fhewed the direftion of the illuminating ray, and 
thereby affifted me in meafuring to a great exadlnefs ; 
but the mountain itfelf is not very favourably fituated. 
March 16, 1 oh. 30b Mons Lacer projected 45 /7 ,62 5 ; 
but I am aim oft certain that there are two very con fider able 
cavities or places where the ground defcends below the 
level of the convexity, juft before thefe mountains, fo 
that thefe meafures muft of courfe be a good deal too 
large: but fuppofing them to be juft, it follows, that on 
is 50,193 miles, lm = 64 miles, and the perpendicular 
height above ij- miles. 
Another of the fame mountains fituated on the bor- 
ders of S. Sirbonis meafured 41 ''',875. This ridge of 
mountains is the fame of which I meafured one on 
January the 17th, which was then found to be 1,47 
miles high. 
