TALBOT4276

Dear Sir

Having returned from our General Assembly ¹ I am going to begin to try your Calotype Process. ² I see, however, that even if I succeed in obtaining good Negative Landscapes or Portraits I am ignorant of your method of obtaining from them Positive Pictures. Of course this is done by superposition; but your experience must have taught you the best way of doing them.

I cannot understand how any thing so sharp as the two Positive Portraits you sent me ³ can be produced by the Solar Rays after they have permeated, and been to a certain degree dispersed by, a sheet of writing paper. The Negative original will surely require to strongly pressed against the Sheet of Paper upon which it is to be positively impressed.

I am Dear Sir, Ever Most Truly y^rs
D Brewster

S^t Leonards
S^t Andrews
June 12^th 1841

H.F. Talbot Esq^r