741 CAKBON BISULPHIDE • The use of carbon monoxide for homicidal poisoning is very rare, Ithough a few cases have been recorded. A murderer may turn on a gas ap when his victim is asleep in his bedroom, and thus suffocate torn to leath without disturbing him. The elimination of the gas from the blood after the patient has been •emoved from the atmosphere containing carbon monoxide is very sngm ror he first hour and-a-half, but becomes rapid after that and provided the patient lives, all the carbon monoxide would have been eliminated from nve ;o six hours.11 . A case12 is recorded in which the post-mortem appearances which simulated very closely those of carbon monoxide poisoning were due to tne formation of nitric-oxide-hasmoglobin (nitroxyhamoglobm) ^ deatn. A man employed at a colliery in stoking the boiler furnaces died after an illness of nine days. At the post-mortem examination held within a tew hours, the whole of the blood, in whatever part of the body, mcludmS ™\£S spleen, kidneys, muscles and lungs, had a bright red colour exactly sgiar to that seen in death from carbon monoxide. The blood also responded _to the usual tests of carboxyhaemoglobin. Hence a verdict was &^ *=** inquest that the death was due to carbon monoxide poisoning. ^n wrtner investigation it was, however, found that the red colour of the blood was due to the development of nitric-oxide-hsemoglobm probably by the^ action of a nitrifying infective organism in the body. A solution of *e bloo™t taining nitric-oxide-haemoflobin can be distinguished by boihng, ™cert gives! pink coagulum, while the blood containing oxyhaemoglobin and car boxyhasmoglobin gives a dull grey coagulum. t, M j Carbon monoxide retards putrefaction, and may be detected mthe blood several days after death from ppisoning by this gas. Autenrieth J^ carbon monoxide in the blood of an adult two months ^J^tSwSto the conclusion from investigations carried out on rats in Jan J ^ in cases of deaths by carbon monoxide the organs begin to decomp the third day and the blood, after the fourth day. •" . CARBON DISULPHIDE (CARBON BISULPHIDE), CS, ^ ^ . This is a colourless, highly refractive, volatile Cm^vdtTa'blTe ffcme, forming . This is a colourless, highly retractive, voi^, »- ^ w flame> tormmg odour. It boils at 46°C Being highly^ inflammablejrt *£rns ™ freely ^^ carbon dioxide and sulphur dioxide It 1S not ""^"J^fly and most of the essential alcohol, ether, chloroform, hydrocarbons of the .^cTndia-rubber, phosphorus, sulphur, os. s us es etc., and for extracting essential oils, spxces and perfu* i - ^ or froln Acute Poisoning-This form of poisoning occurs from swauovnng tne inhaling its vapour. ... headache giddi- Symptoms-Intense burning pain in &« throat^ n^' v^d d^p skin, laboured ness, drowsiness, unconsciousness, dilated pupils, ^^aisulphide in the breath, urine ° n, , , respirations, muscular weakness and odour of c^ and fasces. These are followed by convulsions, coma ___ _ 11. Henderson, Brit. Med. Jour., Jan. 9, 1326, p. 45 ; Douglas J. Kerr, Ibid., Marc 14 Deut. Zeit f. A. *&$. fferichtl: Mear, 1933, 1934, Vol. H, Part I, p. 95.