A Simple Means of Preventing Spider-Lick

We gladly took the opportunity represented by a large collection of the insects that were forwarded from the same source to try out the hypothesis. A powerful tincture prepared from the specimens and matured since May 1938 was used for the experiments on two volunteers. In each experiment approximately equal quantities of the fluid were used for it and for the control. Experiment I.?In the first experiment both forearms of volunteer A were painted with the tincture. One hour afterwards the left forearm