ASCARIS LUMBRICOIDES. 421 



cuanha, walnuts, china bark, willow bark, Spir&a ulmaria, oak 

 bark, dragon's blood, catechu, kino ; and also with the vinous ex- 

 tract of oak bark (Raderu.), assafoetida, gum ammoniac, Peruvian 

 balsam, Roob Junip., Extr. Thujse, 01. Ricini, 01. Chaberti, 

 Aq. picis, creosote water (weak), Fuligo splendens, and sulphate 

 of soda (in weak solution). 



Lead, zinc, calomel, and copper, had no effect, as the}' lay un- 

 decomposed at the bottom of the glass. 



Besides the remedies here enumerated, I have also tested the 

 Semina Cinse with their preparations. In a mixture of white of 

 egg with coarsely powdered seeds, the worms live for days ; and 

 in a mixture of white of egg with a strong Infusum semin. Cinse, 

 with repeated additions of unboiled powder, they also lived for 

 days. In a mixture of santonine with water and white of egg 

 the worms lived for days, and also in white of egg with santonine 

 and a little vinegar. At the same time, however, the almost 

 total insolubility of the santonine was proved, by suspending a 

 little linen bag, with shots and crystals of santonine in the fluid 

 taken out of the stomach of a cat, and slightly diluted with water, 

 at 80 F. (30° R.), without any formation of crystals of santonine 

 in the fluid subsequently. 



In white of eggs mixed with castor oil and santonine, the 

 worms died, according to my experiments, within an hour. 

 Falck, who repeated this experiment, could not convince himself 

 of this, and I admit that the apothecary's assistant, to whom I 

 had left the watching of the experiment, made a mistake in the 

 regulation of the temperature, and allowed it to rise too high and 

 too quickly. 



In a mixture of white of egg with Natron santonicum dissolved 

 in water, Ascarides lived more than twelve hours. 



In order, now, in the second place, to try in practice which of 

 those methods, which appeared to me to exert an influence upon 

 the life of the worms, were best adapted for practical application, 

 and at the same time to test the mechanical irritants, I made the 

 following experiments with anthelmintics upon living cats and 

 dogs. I administered Stannum raspatum to living cats, and, on 

 dissection, found Tcenia and Ascarides quite lively in the intes- 

 tine, but the canal itself much irritated, and numerous punctiform 

 spots of extravasated blood, in consequence of the wounding of 

 the intestine by the points of the tin filings. Exactly the same 



