I have your letter of the 23rd April and thank you for your offer to exhibit the conductometer at the May Soirée. I regret, however, that we have now no space available to offer you, but perhaps I could arrange for you to exhibit it at the Soirée in June, if you are willing to do so then.
I am, Dear Sir, faithfully yours,
Robt [Robert] Harrison
Asst. Sec. R.S. [Assistant Secretary, Royal Society]'.