Showing papers by "R. N. Chopra published in 1925"

Observations on the Anti-Diabetic Properties of Cephalandra Indica (Telakucha).

Abstract: The plant has tuberous roots, deep green leaves and a scarlet coloured fruit with a bitter taste. The Ayurvedic writers recommend the juice of its tuberous roots and leaves in diabetes; the leaves are also used by them in skin diseases. We investigated the anti-diabetic properties of this plant as its juice is often prescribed by medical practitioners in Bengal and wonderful results are ascribed to it. Chemical Composition and Pharmacological Action.?The plant was analysed for us by Dr. Sudhamoy Ghosh, d.sc., and Mr. Nihar Ranjan Chatterjee, m.sc., to both of whom we are very grateful. The details of this work will be published in the Indian Journal of Mcdi-

The Toxicity of Carbon Tetrachloride to Cats. A Warning.

Abstract: for a number of experiments on the toxicity of carbon tetrachloride under various conditions of diet, etc. In all we have given carbon tetrachloride to 87 cats, in various dosages and under various dietary conditions and have found the susceptibility of cats to this drug so great that it was impossible to get more than suggestive results from our various experiments. Ninety-two per cent, of the cats died or were killed in a dying condition, regardless of dosage or diet. Hall and Shillinger (1923) state that carbon tetrachloride at the rate of 0.3 c.c. per kilo, is well tolerated by cats, and report ten experiments on five kittens, with doses of carbon tetrachloride ranging from 2 c.c. to over 11 c.c. per kilo., of which only two, receiving over 9 c.c. per kilo, each, died. Two of the kittens

Variations in the Potency of Digitalis Preparations in the Tropics (II).

Abstract: alcohol according to them showed no greater ?deterioration than the leaves. Roth (1916) found by the " one hour frog method " largevariations in the strengths of tinctures. Newcomb and Rogers (1918) laid much emphasis on the effects of temperature on the strength of various preparations and considered that even chilling below 40? F. for a short time decreased the potency of tinctures by an increase in the natural precipitation, which carried down some of the active principles of the drug. Tate (1921) pointed out that tinctures of standard strength deteriorate in a warm climate