[ ! 9 ° ] 
jeclure, which deferves further Confirmation < as 
the Seafon was already too far advanced, to allow 
me to make as many Experiments as I could have 
w idl’d : But here are jet other Fads, of which I 
have a greater Certainty, and which are not lefs in- 
terefting. . 
I chofe fcveral Pairs of Animals of different kincis, 
Cats, Pigeons, Chaffinches, Sparrows, &c. I put them 
all into feparate wooden Cages, and then weighed 
them. I ele&rified one of each Pair for five or fix 
Hours together : Then I weighed them again. The 
Cat was commonly 65 or 70 Grains lighter than 
the other j the Pigeon from 35 to 3 s Grains; the 
Chaffiinch and Sparrow 6 or 7 Grains: And in or- 
der to have nothing to charge upon the Difference 
that might arife from the Temperament of the Indi- 
vidual, i again repeated the fame Experiments, by 
ele&rifying that Animal of each Pair, which had not 
been electrified before 5 and notwithstanding fome 
fmall Varieties which happen’d, the electrified Ani- 
mal was conftantly lighter than the other in propor- 
tion. 
Electricity therefore increafes the infen fible Per- 
fpiration of Animals: But in what Proportion? In 
the Ratio of their Bulks, or in that of their Sur- 
faces? Neither of the one or the other, ftrictly 
fpeaking, but in a Ratio much more approaching 
to the latter than to the former. So that there is 
no Room to apprehend that a human Perfon elec- 
trified would lofe near a 50th Part of his Weight, 
as it appear’d to me that it happen’d to one fort ot 
Bird ; nor the 140th Part, as to the Pigeon, &c. All 
that 1 have been hitherto able to learn upon this Head, 
