Coc. ind. is used to stupefy fishes, and when Picro. is added to water in which fishes are swimming "they make winding and boring movements of the body, alternating with quiet swimming, open their mouths and gill caverns frequently, fall on their side and rapidly die of asphyxia" (Falk, quoted C. D. P.). J. H. Henry proved Picro. on himself. The symptoms were so severe that he was alarmed, and took Opium and Camphor to antidote them. Nausea with tendency to faint, violent intestinal pain and purging, dysenteric diarrhoea and excessive secretion of urine, cramps and paralytic sensations were experienced. The symptom which gave the most concern was the pain in the bowels and sensation as if the bowels would protrude at left inguinal ring. Brunton says the local application of Picro. as an ointment to the head for tinea capitis and to destroy pediculi has been followed by convulsions and death. Hansen mentions that it has been given at bedtime to relieve the night-sweats of phthisis. With Picrotoxicum acidum 3x Dörr cured in a few weeks a case of advanced locomotor ataxy with amaurotic amblyopia (B. J. H., xxxvii. 378).