whole of this operation I was standing over it, and the vapour that escaped I smelt the whole time, but did not recognise the slightest odour of prussic acid; the odour was the same as that of the contents of the bottle, but it was more powerful. The contents of the basin were then put into a paper filter placed in a glass funnel, and that which passed through the filter was collected in a glass vessel placed for its reception. While this operation was going on I directed my attention to the contents of the beer bottle and the tumbler. I found them both to have an acid reaction on litmus paper, the contents of the beer bottle very decidedly so; but on the application of the usual tests employed for the detection of oxalic acid, not a trace of it could be found. “By this time a small quantity of clear liquid from the contents of the basin had passed the filter; this was removed from the glass vessel employed to receive it into a test glass, and on the application of the tests for the detection of oxalic acid not the smallest trace was indicated. I then felt quite certain that oxalic acid had not been the cause of death. “I was then shown the stomach by Messrs. Champneys and Norblad, and on examining its interior surface it did not appear to have been acted on by any corrosive substance: nevertheless I thought it advisable to search for sulphuric acid, and accordingly applied to a small portion of the liquid, filtered from that which had been boiled, the test for that substance, but none could be detected. In like manner I did also apply the tests for the detection of baryta, opium, arsenic, the salts of mercury, and other metallic poisons, and could find none of them. I then came to the conclusion that, if the person had died from the effect of poison, it could be no other than prussic acid.