30 March 39
Dear Sir,
I do not bind the Comptes Rendus, <1> if you wish me to send you in the country any other extracts relating xsm to Daguerre, <2> only tell me.
I presume their is a double decomposition, <3> Hyposulphite Soda & Chloride silver become Hyposulphite Silver & Chloride Sodium
Yours very truly,
J W Lubbock
Notes:
1. Comptes Rendus hebdomadaires des séances de l’ de l’Académie des Sciences.
2. Louis Jacques Mandé Daguerre (1787–1851), French artist, showman & inventor.
3. That is, in the action of hypo on exposed photogenic drawings.