[ 78 ] 
the latter applied in a greater Number In vain, even 
when the Symptoms were not fo feemingly defpe- 
rate as in the Cafe before you. 
He took near one hundred and five Grains of Musk 
in about thirty Hours 5 but I can't fay he either flept 
Orperfpired more than ordinary upon it. 
XVI. Part of a Letter from the Rev. Dr. 
Miles, F.R.S. to Mr. Henry Baker, F.R.S * 
concerning Ele&rical Fire. 
Dear Sir , 
Reaa Feb. 2o.~^7~QU query, Whether that fubtil Fire 
j[ which kindles warm'd Spirit of 
Wine, be refident in the Body from which it evi- 
dently iffues, and be kindled occafionally ? or, Whe- 
ther it comes from the excited Tube pervading in- 
flantaneoufly the Body it is applied to ? or, laftly, 
whether there are certain Principles in the Air, 
which are thus agitated into an extemporaneous 
Lightning ? Thefe Queries are certainly very com- 
prehenfive aed important $ I wifh I were able to re- 
turn you fomewhat more fatisfaftory than Suppo- 
fitions. 
I incline to think the eleftrical and luminous 
Effluvia to be the fame, and not diflindl Sub fiances. 
Mr. Haaksbee feems to diflinguifh them, intimating, 
that no luminous Matter would be communicated 
from an excited Cylinder of Wax to his Finger, when 
brought near to the Cylinder, though it attra&ed 
liuht Bodies 5 but it is to be obferved, that this Cy- 
linder 
