It trch ID the day time^o three or ^3ur v ingemour 
Phyfitiansj all of them C^^ve ont) ificiribers of the R, So- 
cietj^ znd I prefume 1 oeed not re- mind you, that the 
fbllowing nightl iovitedyoatobea^^lJ^^^/^ pf it, though 
bjefbre that time the light had beguri W^ay arid the of^ 
fenfiveimell to grow (bm^ what ftrorigi which feems to^r- 
gue, that the dilpofitioa, upon whofe account ow Veal 
was luminous, may very well confift both with its bclog 
audnot being in a ftate of putrefaBion, and confequeotly 
is not likely to be derived meerly from the one or the o- 
ther. The fifth day^ in the mbrningiooiiDg upon it when 
I awaked, and before the curtains were ©pened^ it feemed 
to fliine better than it had done the day preceding. The 
fame night alfo it was manifeftenoughj though not vivid^ 
in thedark. When I awaked^ the fixthday in themorn* 
log after the Sun was rifeuj I could within the Curtain per.- 
ceiFe a glimmering light* But the fevcnth day," which 
wasyefterday, I could not late at night difcern any light 
at all* 
You fa w too much in what a condition I waSj when you 
did me the favour to vifitme, to expedi that I (hould pre- 
lume to cnrerrain you with any Speculations about the 
cauie of thefe uoufual apparitions of light. *Tis truein- 
deed,thatiD fomenotesj I formerly mentioned to you^ I 
endeavoured to make it probable^ that whether Light de- 
pend upon a particular kind of Impulfe propagated 
through a tranfparent Medium or upon a DifFufion of ex- 
treamly little parts from the Luminous body • or upon the 
Aftionoffome other corporeai agent 5 what ever theEffi* 
cientbe, the Effed is produced in a Mechanical way* But 
though I had thefe papers by me 5 .yet to determine what 
peculiar Kind of motions or other operations Nature real- 
ly imployed in the produdion of a light, which feemed not 
clearly t/by whatl fliall prefently note) referable either to 
the particular and fetled conftitution of the Jnmals^vihok 
flefh fhinedj(as iu our Gloworms and fome American flies;) 
or 
