Autograph letter signed.
8vo. 1 p. on bifolium.
To an unidentified recipient: "Dear Sir, Our laboratory is very full, but it is possible there may be room for one more. I shall not know until after the end of this term, or I shall let you know as soon as I can. Would you send me your home address? Three - or rather 2 - months is, however, a very short time for a research [...]".
On headed paper of the University College London; left margin with punched holes (not touching text).