​

"London, June 28, 1856.

"Dear Sir,
"Allow me to introduce to you Captain Burton, the bearer of this note, who is employed by Government to make an expedition to Africa, at the head of a little ​band of adventurers. Captain Burton has been highly spoken of in the papers here; and I have been asked to give him this introduction to you as a Catholic officer.

"I am, dear Sir,

"Yours sincerely in Christ,

"N. Card. Wiseman.

"Colonel Hammerton," etc., etc., etc.