Haemosiderin, an iron-containing pigment (probably an hydrated ferrous oxide), is found in more or less loose combination with protein substances in an amorphous form as brownish or black granules.
It is believed rather that the condition is due to deleterious toxic substances which act for prolonged periods on the tissue elements and so alter their histon proteins that they combine in situ with other protein substances which are brought by the blood or lymph.
As probably the protein constituent varies in the different organs, one infers that this will account for the varying results got from the analysis of the substance obtained from different organs in such cases.
Cystin (protein-cystin) or a-amino-,-thioglyceric acid " disulphide," (S.
Its chemical composition - containing, as it invariably does, one or more forms of a complex compound of carbon, hydrogen, pro- oxygen and nitrogen, the so-called protein or albumin The perties of (which has never yet been obtained except as a pro living duct of living bodies), united with a large proportion matter.
This is especially unfortunate because a major crop in Africa, grain sorghum, has a somewhat indigestible protein which our bodies have a hard time metabolizing.
Amongst these, the most important is fever with increased protein metabolism, attended with disturbances of the circulatory and respiratory systems. Nervous symptoms, somnolence, coma, spasms, convulsions and paralysis are of common occurrence.
Not only does exposure to heat sufficient to coagulate protein matter destroy life, by demolishing Life con- the molecular structure upon which life depends; but ditioned all vital activity, all phenomena of nutritive growth, by tern' movement and reproduction are possible only be- perature.