48 CYANOGENESIS IN SORGHUM VULGARE Laboratory experiments on cyanogenesis a single experiment. Liebig’s process was employed, and sulphuric acid was in each case added to the distillation flask as recommended by Briinnich.

1. Affected. Young dura about 16 inches high. No seed grains developed. Contained *035 per cent. HCN.

2. Unaffected. Dura slightly younger than the above. No seed grains developed. Contained *014 per cent. HCY.

The investigation of cyanogenesis in all the fodder plants used in the Sudan and in certain of the leguminosas, is a piece of research a chemist might carry out with advantage.