[ * 9 ° 3 
the fpace of two hours and a half, I faw it frequent- 
ly emit continued ft reams of rays or fparks (fee 
fig. 4.); fometimes fingle drops as k were flowly 
fucceeding to each other, and fometimes only a pale 
feeble light. On examining next morning, I found 
the chain broken at B, half the eye of each link 
being quite gone, and the points ot the remaining 
halves about three fourths of an inch afonder : luckily, 
the chain was fattened to a fmaller rope (fig. 2.) 
above and below the eye of each link, which pre- 
vented that part of the chain below B, from falling 
into the water, or of being feparated from the part 
above B, beyond the ftriking or attracting diftance. 
1 am with the greateft refpect, 
S 1 R, 
Your obliged humble fervant, 
J. L. Winn. 
.References 
