TALBOT4252

Dear Sir,

I have received safely your interesting letter, ¹ and will take special care that your process ² continues a secret ³ till you wish it made known. I shall have great pleasure in trying it when you have leisure to communicate to me the other half. ⁴

The sensitiveness of the Calotype Paper to Moonlight is a most extraordinary fact, and cannot fail to excite great interest as a scientific fact. That the chemical rays sh^d shew themselves by such marked effects, & with out condensation, while the heating rays cannot be rendered effective by the most powerful Lens & Specula is truly wonderful.⁵

I should like to know if the two Portraits ⁶ you were so kind as to send me were made by the Positive or the Negative process.

I am Dear Sir Ever Most Truly yrs
D Brewster

S^t Leonards
S^t Andrews
May 5^th 1841

H.F. Talbot Esq^r