331 
teapot, may, by the sure process of the electro-deposit, be 
formed as soon and as cheaply as a design however plain. 
Polished copper plates for engraving upon can be deposited 
at a cost of three shillings per pound, and this price leaves 
a fair profit to the tradesman. Engraved copper plates can 
be copied for eight shillings for each pound of copper — that 
is to say, four shillings for the matrix, and four for the 
copy — as the first of these, containing the lines in relief, 
is nearly as heavy as the second, or copy for engraving 
from. Thus a copper plate, which has cost £100 to en- 
grave, may be faithfully copied for as many shillings. The 
process is applicable to many elaborate forms of metallic 
vessels, and hence, Mr. S. observed, we may conclude that 
it will, ere long, find its way into the workshops of our 
manufacturers. 
A vote of thanks was given to Mr. Thorp, Mr. Wallen, 
and Mr. Sopwith, for their respective papers. 
At the conclusion of the meeting, Mr. Biram exhibited 
a model of an improved piece of machinery for landing coal 
corves. 
