| Description | Sends for estimate one card out of 23 cards of tracings illustrating a paper for the 'Philosophical Transactions of the Royal Society' [not enclosed]. Asks Wilson to estimate for blocks for the whole number from this average sample. Encloses measurements of the tracings on an enclosed slip [not enclosed]. The blocks should be printed with the letterpress therefore the eight and nine inch tracing might be reduced to six inches, so as to go into the width of letterpress. As the tracings are clean and sharp they hope they can be reproduced without re-drawing. They might be photographed and reproduced black on white. |