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Rh his arrival he found the patient already dead. From his own examination and from what he was told he had no hesitation in diagnosing the case as one of agaric poisoning. He saw no reason to suspect any of the food except the mushrooms, and all the symptoms pointed to bhurine, the deadly principle of Amanita Bhuroides, or the Black Cap, as it was popularly called, from its fancied resemblance to the head-dress assumed by a judge in passing death sentence, coupled with its sinister and well-merited reputation. It was always fatal.

Continuing his evidence, Dr Slark explained that only after maturity did the Black Cap develop its distinctive appearance. Up to that stage it had many of the characteristics of Agaricus campestris, or common mushroom. It was true that the gills were paler than one would expect to find, and there were other slight differences of a technical kind, but all might easily be overlooked in the superficial glance of the gatherer. The whole subject of edible and noxious fungi was a difficult one and at present very imperfectly understood. He, personally, very much doubted if true mushrooms were ever responsible for the cases of poisoning which one occasionally saw attributed to them. Under scientific examination he was satisfied that all would resolve themselves into poisoning by one or other of the many noxious fungi that could easily be mistaken for the edible varieties. It was possible to prepare an artificial bed, plant it with proper spawn and be rewarded by a crop of mushroom-like growth of undoubted virulence. On the other hand, the injurious constituents of many poisonous fungi passed off in the process of cooking. There was no handy way of discriminating between the good and the bad except by the absolute identification of species. The salt test