This testimony of Mr. Heaton’s was challenged by the prosecution, and considerably nullified by the fact that he did not know Mr. Maybrick, his customer, by name, but identified him by a photograph. To show how inexorably one fatality after another was woven into the web of my tragic case, it is in order to state that Mr. Heaton’s connection with Mr. Maybrick could and would undoubtedly have been perfectly established but for what in the circumstances can be characterized only as a criminal blunder on the part of the police. In the printed police list of the score or more medicine bottles found locked in the private desk of Mr. Maybrick at his office was one entered as follows: “Spirit of salvolatile, Edwin G. Easton, Exchange Street East, Liverpool.” This misprint of Easton for Heaton escaped the attention of everybody at the trial, and thus prevented the defense from identifying most circumstantially Mr. Maybrick with Mr. Heaton’s customer who had the arsenic habit. ARSENIC SUPPLIED TO MAYBRICK BY MANUFACTURING CHEMIST About ten years ago Mr. Valentine Charles Blake, of Victoria Embankment, son of a well-known baronet and Member of Parliament, made a voluntary statutory declaration [corroborated on oath in every possible essential by William Bryer Nation, of No. 7 Lion Street, a manufacturing chemist and patentee], that Mr. Maybrick, about two months before his death, procured through him (Mr. Blake), from Mr. Nation’s supplies, as much as 150 grains of arsenic in various forms. Mr. Nation, assisted by Mr. Blake, had made certain chemical experiments in preparing ramie, the fiber of rhea grass, to serve as a substitute for cotton. Among other ingredients used was arsenic, some in pure form (white arsenic), some mixed with soot, and some mixed with charcoal. In January, 1889, the process was perfected, and some time during the same month Mr. Nation sent Mr. Blake to see Mr. Maybrick, to get his assistance in placing the product on the market. Mr. Maybrick was interested in the proposition and inquired closely into the nature of the process, what ingredients were used, etc. The deponent told him that, among other materials, arsenic was employed. Then, to quote the exact words of the deposition, Mr. Blake went on to say: