Luminous Water InfeSls. 403 
u Worm may be difcovered, hanging with 
c< its Tail fixed to an opake Spot in a Kind 
(c of Bladder *, which it has certainly a 
f( Power of contracting or diflending, and 
(e thereby of being fufpended at the Surface, 
* c or at any Depth it pleafes in the including 
" Water.” 
The above-mentioned Phial of Sea Water 
came fafe, and fome of the Animalcules 
were difcovered in it, but they did not emit 
any Light, as my Friend fays they do upon 
the leaf! Motion of the Phial when the Wa¬ 
ter is newly taken up. He likewife adds, 
that at certain Times, if a Stone be thrown 
into the Sea, near the Shore, the Water will 
become luminous as far as the Motion reach- 
eth : this chiefly happens when the Sea hath 
been greatly agitated, or after a Storm. 
Jcf. Vianelli , M. D. of Chioggia in Italy , in 
his Enquiry into the fhining of Sea Water in 
the Night Time (which, he fays, is feen 
with Wonder in the Lakes of Chioggia , from 
the Beginning of Summer until Autumn, es¬ 
pecially where Sea Weeds abound), relates, 
that he brought from thence, one Summer's 
Night, a large Veffel of this Sea Water, 
which being ftirred about by his Hands in 
a dark Clofet, fparkled very much ; but after 
it was filtered through a clofe Piece of Li- 
aen it afforded no Light at all, notwithlland- 
• A Drawing of this came with the Account, but it was 
too late for the Engraver, 
B & z ing 
