CARBON BISULFIDE FOR CABBAGE ROOT MAGGOT. 
{From Bulletin IS, New York Agricultural Experiment Station, 
Ithaca, N. Y. Prof. M. V. S/ingerlam/.] 
Prof. Cook was the first to experiment with this volatile sub- 
stance on the root maggots. In 1880, he used it for this purpose 
“with the happiest results. A small hole was made in the earth near 
the main root of the plant, by the use of a walking stick, and about 
15 cubic centimeters of the liquid poured in, and the hole quickly 
filled with earth, which was pressed down w ith the foot. In every 
case the insects were killed without injury to the plants.” The next 
year, Prof. Cook found that its use was not practicable in radish 
Fig. 4.— The male fly, side view with right legs and wing removed, 
greatly enlarged ; natural length of the body repre- 
sented by the white hair line below. 
