Allied to the use of arsenic in chorea, is its use (which, however, is much less markedly beneficial) in these nerve-conditions. Tremor may be due to various causes, which are often central and connected with organic disease, and scarcely amenable to treatment; but Eulenburg reports several cases successfully treated by hypodermic injection of 2 to 3 min. of Fowler's solution diluted with two parts of water (Berlin. Klin. Woch., 1872, No. 46). Isnard says the remedy is valuable in ataxia developed during acute fevers; he gives it even during febrile accessions.