Handwritten letter from A. W. Hofmann to William Henry Perkin, asking to be supplied with a quart or two of aniline. Hoffman also asks what proportions of chemicals Perkin uses to make Nitro benzol and offers a suggestion as to a source of benzol. Sent from the Royal College of Chemistry. Includes a handwritten transcript of the letter. Correspondence - Letter from A. W. Hofmann to William Henry Perkin