On some new species of animal concretions / [Thomas Taylor].

  • Taylor, Thomas, 1814-1892.
Date:
[1845]
Catalogue details

Licence: Public Domain Mark

Credit: On some new species of animal concretions / [Thomas Taylor]. Source: Wellcome Collection.

    3/12 (page 3)
    _d-hot. It was redissolved in water, and mixed with alcohol and chloride of platina. Chloride of platinum and potassium was thrown down, which when washed with alcohol and care¬ fully dried weighed 10*32 grs., = 1*99 PO. The quantity of ammonia was estimated by boiling the pow¬ dered calculus in a solution of potass, transmitting the am¬ monia evolved through diluted muriatic acid, and precipita¬ ting it in the ordinary manner by chloride of platina. 11*40 grs. yielded 4*57 of chloride of platina and ammonia, =3*10 per cent. 1 do not, however, place much confidence in this mode of estimating the ammonia. The result of the analysis of this calculus, calculated in 100 parts, is therefore as follows: it is compared with an analysis of the calculus which had no history, in which the quantity of potass is rather greater:— Uric acid mixed with a trace of oxalate of lime 78*64 78*36 Potass ..10*42 13*19 Ammonia . . 3*10 3*09 Lime ..1*89 1*49 Magnesia . 0*00 0*29 Phosphate of lime . ... . 0*32 0*02 Animal matter .. 2*73 0*43 Water .. 1*67 1*80 Sulphate of soda with chloride of sodium . . traces fcJnsaJdfcnoD ih 98*77 98*67 By another analysis, in which the quantity of potass was alone estimated by calcining the calculus until nothing but carbonate of potass was left, and precipitating the dissolved salt by chloride of platina, 10*72 per cent, of potass was found in the first, and 13*07 in the second calculus. The potass in these concretions is probably derived from the leaves and other vegetable matter on which the Iguana partly subsists, while the carnivorous or insectivorous habits of the reptile are indicated by the large quantity of uric acid they contain. Urinary Calculus from the Sturgeon, consisting of Diphosphate of Lime. Beluga stones. These calculi are found by the fishermen of the Caspian Sea and of the Volga in a species of Sturgeon (Acipenser Huso, Linn.). The statements of different authors as to the situation of the stone in the fish, are very conflicting, some describing it as occurring in the air bladder, others in the head and stomach. In Schrober’s Memorabilia Russico-Asi- atieci, as quoted by Klaproth, it is said to be most frequently found in a small potoch communicating with the pancreatic B 2