Bacteriological, physiological, etc

1921 The Analyst  
1921, 46, 396-405.)-Five species of mollusae were examined, two of these, Abalorte and the Pismo clam, being of importance in huknan dietary. The digestive juices both of the stomach and intestines in each of the specigs showed an acid reaction and aontained a variety of enzymes, although cgtase was absent from all. Analyses of the musole tissues showed B high percentage of ash in all species, whilst the protein content vaxied from 23 per cent. in Abalone to 10.26 per cent. in the Pismo clam.
more » ... n the Pismo clam. HydrolysiB of the alcohoiio extract yielded from 5.26 to 27.2 per cent. of reducing sugars calculated on the dry extract. Creatine and creatinine were identified in Abalom muscle, these bases not having been previously recorded in molluscan tissues. Amylase and glycogenam were deteeted in Cyptochita0.n musole, and urease in that of the Pismo clam. T. J. W. Coffee Bean (Damberttorc.la long6fo&z) as a Poisonous Plant. C. D. Marsh and A. B. Clawson. (J. Agrie. Rasearch, 1920, 20, 507-513.)-This plant, sometimes named Sesbmia cavaniltesii, is IL &rub belonging to the order Legmimsa, and ocours in the wild state over an area extending from Florida, to Texas. In feeding experiments on sheep the smallest dose of the whole plmt producing symptoms of poisoning was 0.066 lb. per cwt. o€ animal, and the minimum fatal dose was 0.11 lb. The seeds are more highly toxic than the leaves and seed pods, although the roasted seeds have been used m a, substitute for coffee without deleterious effect. Various cloaely related plantis have from time to time been described as poisonous. The toxic substance in the plant is excreted very slowly by animals, and poisoning may result from the repeated administration of quantities below the toxic dose, The plant is poisonous to sheep, and probably goats, but no data are extant with regard to its effect upon cattle and horses. T. Removal of Ammonia from Urine, @. E. Youngberg. ( J . IXoZ. C'he?iz., 1921, 45, 391-394.) -Five C.C. of urine are diluted to 50 c.c., and 20 to 25 C.C. of the dilute solution are shaken with 3 to 4 grms. of dry permutit for Eve minutes. After settling, the solution is filtered, and the filtrate, which will then be entirely free from ammonia, may be used for the estimation of urea. Tabulated results given show that the accuracy of the urea estimation is unaffected when the original urine contains excess of ammonia or mineral and urinary salts. of the viscera may be disregarded. Amounts between 1 and 3 mgrms. indicatte therapeutic arsenical treatment, and &re usually found in the liver, kidneys, and intestines. The presence in the viscera of 3 to 7 mgrme. is also compatible with novarsenohenzene treatment oocurring two to twenty-five days previcrusly, the substance undergoing normal elimination. When, however, the viscera contain cgrms. of arsenic, arsenical poisoning is indicated.
doi:10.1039/an9214600145 fatcat:pztui4jrqbdrbo6vmjnot2icb4