I see that your announcement of today's papers is entirely wrong. You appear to have simply taken out the word "probably" from last week's announcement, without verifying the titles by the weekly post-card which our printers send you. Enclosed I send a copy of the post-card, by which you will see that two[?] papers ought to have been taken out, & one paper added.
Asst Sec RS [Assistant Secretary, Royal Society]'.