[ 45 * ] 
I directed him pills of Millepedes and Gum Ammo- 
niac made up with Bal. Sulph. to be taken twice a 
day, drinking warm milk after them ; by which 
means, he grew perfe&ly well, and went to fea in 
twelve days. 
LXX. A Letter from Benjamin Franklin, 
LL. D. and F. R. 5. to the Reverend 
Thomas Birch, D. D. and Secretary to 
the Royal Society . 
g I Craven-Street, Feb. 4, 1762. 
Read Feb. 4, \ /T R. Canton did me the favour to 
1762. |Y| {hew me the ingenious experi- 
ments he has deferibed in the inelofed letter. They 
fucceeded perfectly as he has related them > and 
imagine, the communication of them muft be agree- 
able to the curious in this branch of natural know- 
ledge. 
T 
I am, 
S I R, 
With great refpeft. 
Your moft obedient 
and moft humble fervant, 
B. Franklin.. 
LXXI, A 
