~~ a eo ee 
XXI. 
A CURIOUS PHENOMENON OF VISION. 
In a letterto .... 
By Rev. PERES FOBES, ti.p. rf. a. a. 
er SD 
SIR, 
AS a lover of science, and especially of optics, I have been care- 
ful to observe whatever has appeared to have any connexion with it. 
As such, the following instance of a telescopic eye has arrested my at- 
tention and curiosity, and may probably affect others in the same way. 
[have therefore sent the case to the American Academy. It happen- 
ed a few years ago to a man about forty six years of age, whose name 
is Preserved Pierce, of Somerset, near Slade’s ser in the coun- 
ty ty ow es : 
- He was painfully. exercised with a kind of ulcer collected in his 
head, on account of which he was for several days confined to his 
house ; in which time his eye sight was extremely weak and tender, 
in so much that he could not, without great uneasiness, endure any 
degree of light. The room was during the whole time constantly 
darkened. At length however the supposed ulcer broke. This hap- 
pened in the night. The next morning he was entirely free from 
pain, and in a state of sensible ease and comfort ; his mind, which be- 
fore had been greatly depressed and confused, was now quite free and 
composed. On the return of the morning, the sun being about an 
hour high, he arose and went toa south window, through which he 
looked, and to his great surprise he saw, at a place called Reed’s ware- | 
house, near the ferry, at the distance of near two miles, a cartand yoke 
