A manual of elementary chemistry : theoretical and practical / by George Fownes.

  • Fownes, George, 1815-1849.
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: A manual of elementary chemistry : theoretical and practical / by George Fownes. Source: Wellcome Collection.

    1007/1062 (page 979)
    I URINE. 975 mechanical mixture of fibrin and blood-globules, swollen and .listen,led with serum, of which it absorbs a large but variable The following table represents the composition of healthy human blood as a whole; it is on the authority of Lecanu (2.) 785-58 iVfer> 780-15 f£™». 2-10 3-57 Albumin, 65.09 Colouring matter, .... 133-00 CrystaHisable fat 3.43 Fluid fat, . . . . ' Extractive matter of uncertain nature, soluble in both water and alcohol, Albumin in combination with soda, 1-26 2-01 Sodium and potassium chlorides, car- ) Donates, phosphates, and sulphates, \ 8'37 7'30 Calcium and magnesium carbonates ; ) phosphates of calcium, magnesium, 1 2-10 1-42 and iron; ferric oxide, . . . ) Loss» 2-40 2-59 69-41 119-63 4-30 2-27 1-79 1-92 1000-00 1000-00 In healthy individuals of different sexes these proportions are tound to vary: the fibrin and colouring matter are usually more abundant in the male than in the female: in disease, variations of a far wider extent are often apparent. It appears singular that the red corpuscles, which are so easily dissolved by] water, should remain uninjured in the fluid portion of the blood. This seems partly due to the presence of saline matter, and partly to that of albumin, the corpuscles being alike insoluble m a strong solution of salt and in a highly albuminous liquid. In the blood the limit of dilution within which the ^scles retain their integrity appears to be nearly reached, for w hen water is added they immediately become attacked. Urine.—The urine is the great vehicle by which the excess of otogenous food, and the azotised matter of 'those portions of the body whirl, have been taken up by the absorbent*, are conveyed away and rejected from the system in the form of urea. It serves also to remove Superfluous water and foreign soluble matters u hi, I, get introduced into the blood. The two most remarkable and characteristic constituents of nnne, un,,, and uric acid, have already been fully described: in addition to these, ,i contains lactic and hippuric acids, creatine creatinine, and traces of glucose and indican. calcium and mas- nesium sulphates, chlorides, and phosphates, alkaline salts, and