[ 28 7 1 
plenty in quarries, juxta cedes nob. z\ D. Gryfdii Rice 
de Newton, arm. prcpe oppidum Sandli Teilavii , in 
comitatu Mandunice. He calls it Buglofa curta fir : - 
gojr. He alfo gives the figure of it -without any de- 
scription, in the Phil.Tranf. N° 243. 
I beg you would communicate this Supplement to 
the Royal Society in my name. I remain, with great 
efteem, 
S 1 R, 
London, Jaly 1 z , 
J?53 ‘ Your very humble Servant-, 
Emanuel Mendez Ga Cofta. 
XLIII. Letters relating to a Theorem of Mr. 
Euler, of the Royal Academy of Sciences 
at Berlin, and F. R. S. for correEiing the 
Aberrations in the Gbje&-Glafles of re- 
fracting Telefcop es. 
X. 
A Letter from Mr. Jat r,es Short, F. R. S 
to Peter Daval, Efq-, F. R. S. 
Dear Sir, 
Read April 9 ; TpHERE i s published, in the Me- 
JL moirs of the Royal Academy at 
Berlin, for the year 1747, a theorem by Mr. Euler, 
in which he (hews a method of making objedt-glafles 
of telefcopes, in fuch a manner, as net to be affedted 
by 
