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Lastly, Graham also made interesting observations on the combination of alcohol with salts, on the process of etherification, on the slow oxidation of phosphorus, and on the spontaneous inflammability of phosphureted hydrogen.

The gases into which the animal body is resolved by putrefaction are ammonia, carbonic acid, carbonic oxide, cyanogen, and sulphureted, phosphureted, and carbureted hydrogen.

A small quantity of phosphureted hydrogen also escapes.

The property of phosphoric acid of uniting with carburetted hydrogen to form carbonic acid and phosphureted hydrogen certainly is of fundamental importance, as phosphureted hydrogen readily ignites on coming into contact with oxygen.