here, as far as the numerous bubbles excited in the Water would 
give us leave to difcern it (for they cidj though nor unexpeded- 
ly, fcmewhat difturbe the Experiment, which inconvenience we 
might have prevented, if we had choughc it worth while) we 
could not perceive, that ekher the abfence or return of the Air 
had any great operation upon the Light of the immerfed Body : 
which yec did not keep me from intending to makea foraewhac 
like Trial with Shming Weed (whf n I can get any) fafttned to the 
lower part of a ciear Glafs, and covered over, but not very deep, 
with ^kkfiher. Of which pradice I (hall not now ftaytogive 
you the Rcafons, having eUewhere fully enough expreffed them. 
And ihzitlis Se£}m$ may acquaint yoia with fomething be- 
fides the (feemingly) iofignificant Experiment related in itj fliall 
lierc inform you (fince I perceive, I did not in thefirft Papers I 
fent yon) that though, when I formerly put together fome 
Notes about LnininousB >dies, I confined not my Obfervatioas 
to one or t*^o forts of Fifhss, yet the Experiments, fent you fince 
oBokr laft, were all of them ^except a Collateral one or two) 
raide with Whitings^ which among the Fifties, I hive had occa- 
fion to take notice of, is (except one fort, that I cannot procure) 
the fitttftfor fuch Trials, and coafcquently fit to be named to 
yoUj to facilitate their future ones^ in cafe you think it requifiice 
CO make any upon fuch fubjeds. 
Experiment XV. 
THe other of the two neighbouring Experiments, I lately 
mentioned (^'/^. the ninth) I told you, when I fent it yoo, 
needed a reiteration to confirm it, fince we had but once^tried it 
f and that without all the conveniency we defired) that a Shming 
iiody^which upon the firft wi^^drawi^g the Air loofeth much,h\xz 
not all [is Light, ma^^ be deprived of the reft by continuing in thac 
unfriendly place, though the Air be no further exhaufted. To 
profecute therefore both tFe Experiments in one Trial, we took 
fomewhat late zt night a piece of rotten Fifh, which we judged to 
fliiue too ^iro^gl3^ to be quickly deprived of aE its Light ^ and ha- 
ving put it into a fmall and clear Receiver, we found (as we had 
forefeen) that the Light was miich in^^fmtd^ but nothing near 
Rrr MP^S^^ 
