Poisons, Their Effects and Detection / A Manual for the Use of Analytical Chemists and Experts

by Alexander Wynter Blyth

Theobromin.

Caffein.

and experiment has shown that theobromin is weaker than xanthin, and caffein still weaker than theobromin.

Loew[39] makes the following generalisations:—

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[39] Ein natürliches System der Gift-Wirkungen, München, 1893.

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1. Entrance of the carboxyl or sulpho groups weakens toxic action.

2. Entrance of a chlorine atom exalts the toxic character of the catalytic poisons (Loew’s catalytic poisons are alcohols, ether, chloroform, chloral, carbon tetrachloride, methylal, carbon disulphide and volatile hydrocarbons).