(William, 1829-1921, Secretary of the Chemical Society, contributed to the development of the Periodic Table)
Autograph letter signed to 'Dear Sir',
saying he will be happy to write his correspondent's name in the visitors' book from time to time to attend meetings, but it must be on the understanding that you do not render yourself troublesome to the Fellows by questioning them about what passes at the Society &c &c, 3 sides 7 x 4½, Chemical Society, Burlington House, Piccadilly, date at end in another hand 13th December