Thanks for third volume of "English Botany" although so engrossed with Indian plants unsure when he will focus on British plants again. Will send a copy of his commentary on the eighth part of the "Hortus Malabaricus", is making progress with copying the ninth part and writing the tenth, envisages the whole being completed in another year. Sends a copy of his "Indian Genealogies" for Smith's friend. Explains why he has used Latin instead of English botanical terms in his commentary. Outraged by the "monstrous innovations and unnecessary slang" lately introduced into the Linnaean language and the improper manner in which new names are being manufactured. Will soon see [William James] Hooker in Glasgow.

Ask Charles Babbage to send tables of logarithms to TY, who will compare them to [Brook] Taylor's. Bets that five errors will be found. Did JH order mountain barometer from [J. F.] Newman? Will inquire about [W. E.] Parry's instruments. Admiralty, not us, should order sextants.