With reference to your letter of February 11th we are able to supply you with copies of the Proceedings containing your papers, as under:-
No 194 Two copies
No 219 Two copies
No 232 One copies
No 253 Two copies.
The first of your papers appeared in Proceedings No 168, of which we have no copies just at present, but we shall doubtless be able to send you two copies later, as also, a second copy of No 232. Meanwhile the numbers set out above are being forwarded to you, together with a bill for their cost.'