THE PTOMAINES AND SOLUBLE FERMENTS 311 



crystalline platinochloride, an aurochloride, and a 

 hydrochloride. De Coninck has extracted a base 

 with the same formula from the muscular tissues 

 of the cuttle-fish after bacterial putrefaction. 



Hydrolutidine (C 7 H U N). This base was extracted 

 by Gautier and Mourgues from cod-liver oil. It is 

 a colourless body, which is slightly oily and very 

 alkaline. It is slightly soluble in water, and forms 

 crystalline double salts with the chlorides of gold 

 and platinum. 



Hydrocollidine (C 8 H 13 N). This ptomaine was ex- 

 tracted by chloroform 'from the bacterial putrefac- 

 tion of mackerel, horse-flesh, and other albuminous 

 matters. It is a colourless liquid of the odour of 

 syringa, and has a density of 1*029 at C. This 

 base forms crystalline double salts with the chlorides 

 of hydrogen, gold, and platinum. Hydrocollidine 

 is very poisonous; in fact, Gautier says of this 

 ptomaine : ' Elle determine du tremblement, des 

 convulsions tetaniques, 1'animal meurt avec le cceur 

 en diastole gorge de sang.' 



Hydrocoridine (C 10 H 17 N). This base was ex- 

 tracted by the author 1 from pure cultivations of 

 Bacterium allii on nutrient agar-agar. It is a white 

 solid, soluble in warm water, alcohol, ether, and 

 chloroform. It crystallises from water in micro- 

 scopic needles belonging to the prismatic system. 

 These crystals are extremely deliquescent, and have 



1 See Griffiths' papers in Comptes Rendus de I'Acaddmie des 

 Sciences, vol. ex. p. 418 ; Centralblatt fur Bakteriologie und 

 Parasitenkunde, Bd. 7, p. 808 ; Chemical News, vol. xli. p. 145 ; 

 and Gautier's Chimie Biologique (1892), p. 268. 



