The copy on wood is all that I can desire, but as I sh^d like to give a very large number of similar diagrams, I rather grudge so expensive a manner as Photographs for the more simple ones. But why Photographs sh^d be so expensive I cannot think

Moreover when done in this fashion my son or self w^d have to make perfectly nice copies of all, & we are working so hard on experiments that we c^d hardly spare the time.² Therefore will you inform me whether you have a pantograph—or if expensive could borrow or hire one for my work, for in this case, we could soon send you a lot to copy &c &

And the more complicated diagrams & the drawing had better by copied by photography.

What is the cost of one now executed

Please answer my 2 questions, & I remain | Dear Sir | Yours f | C. D