Patent ink and Salts of Gold.

Scientific American 51, 11.9.1847

The Rev. Mr. Reade, of Aylesbury, England, has taken out a patent for an entirely new method of using iodine and the prussiate of potash, for making both writing and printing ink, &c. We shall be able to present a detailed description of the whole process in some future number. The inventor is a good chemist and the details of his experiments will show that he is eminently acquainted with that beautiful and useful science.