(Sir) 
tion having added , that the little GlafsTnftrument , menti- 
on’d in the Note , is fuch an one, as you may find deferibed 
in my Preliminaries to the Htjhry of Cold 5 fave that part of 
this was a little bending inward at the Bafts , that it may 
-fometimes ftand by it [elf , and fometimes receive a fmall 
body into the dimple at its Bafts : Having * I fay , premifed 
this , and , that as Shining Wood did not feel at all warm to 
me, fo I alfo found Shining Fifh palpably cold , I Ihall con- 
clude your trouble with the premifed Note , which fpeaks 
thus : 
[ I put upon a large piece of Wood , which was partly fhi- 
ning, and, as near as I could, upon one of the moft lumi- 
nous parts of it , one of thofe Thermofcopes , that I make, with 
a pendulous drop of Water. But as I had formerly try’d , that 
by laying the tip of, my Nofe or Finger upon it , when it 
fhone vividly enough , to enable me to difeern both the one 
and the other , at the time of conta& I could not perceive 
the leaft of heat , but rather an a&ual coldnefs 5 fo by this 
Trial I could notfatisfie my felf , that it did vifibly raife the 
pendulous drop 5 though the Inftrumeht were fo tender , 
that by approaching one Finger near it, 1 yet without a&ual- 
ly touching of it , it would manifeftly be impelled up , and 
upon the removal of my Finger , would prefently defeend 
again. ] 
And I remember > that hiving put fuch an loftrument op- 
en a Shining Fifh , that was pretty large , I could not thereby 
perceive, that it had any degree of heat , but rather the con- 
trary* For , having divers times taken off the Giafs , to apply 
it with the more advantage to feveral parts of the Luminous 
Fifh , I divers times (for I remember not, whether ’twere al- 
wayes) took notice, that upon the removal of the Giafs into 
the Air , the pendulous drop would maoifeftly rife a little, and 
fubfide again when the Giafs was applied to the Fifli. But 
whether this part of the Experiment will hold in all tempera- 
tures of the Air , I had not opportimity to try. 
An 
