[ 10 7 ] 
confiderable, as I am perfuaded could not be ob- 
tained with round wires, unlefs they could be 
drawn to two or three thoufand to -the inch. 
From what I perceived, in the experiment of 
flattening the wires, I do not fee but that this 
diminution, if it were requifite, might be carried 
a great deal further.. 
I am, &c. 
ALEXANDER WILSON, 
XII, fk 
