"But I didn't let him get away," he said in triumph when he had dropped the clawing insect into the cyanide bottle where death came painlessly.

Lloyd's discovery of the "death bacillus" of the sea toad, and his experiments on it with potassium cyanide, sent his name and that of his university ringing round the world; nor was Paul a whit behind when he succeeded in producing laboratory colloids exhibiting amoeba-like activities, and when he cast new light upon the processes of fertilization through his startling experiments with simple sodium chlorides and magnesium solutions on low forms of marine life.

It is cyanide of cacodyl, and I have carried that small flask of it about with me for months.