|Description||'My dear Anderson,|
The Soirée Committee are quite willing for you to give a lantern demonstration in the Meeting Room illustrative of the recent eruption of Vesuvius. The date of the Soirée is Wednesday, June 20th. I enclose a schedule which you might fill up and return in the course of the next few days.
I am, very truly yours,
Robt [Robert] Harrison
Assistant Secretary R.S. [Royal Society]'.