I'UKMISTUY OF THK PTOMAI.VKS. 223 



iooculent precipitate, which soon crystallines in long bril- 

 li:int yellow needles. This rejiction takes pla<v readily in 

 solution- of 1 to 1000, and only after sonic hours in solu- 

 tions of 1 to 1(),()0() ; and is not given by the bases of the 

 pyridic and tpiinolinic series. Mercuric chloride produces 

 an immediate flocciilent precipitate in solutions of the base 

 having a oOQOentratiOD of 1 to 1000, but re<juires some 

 time to appear in 1 to 10,000. Phosphotnngstic acid gives 

 an immediate white precipitate even in a dilution of 1 to 

 10,000. PhosphomoJybdlfl acid in solutions of the same 

 strength yields a yellow precipitate. 



The physiological action of this baso has been examined 

 by I{. Writr/, who found the lethal dose for rabbits, etc., 

 to be alnmt one gramme per kilogramme of body weight. 

 It produeea stupor, paralysis, which at first appears in the 

 rear extremities ; the sensibility becomes diminished and 

 the pupils are dilated and unresponsive to light; the rate 

 of heart-beat is lowered, and the rectal temperature falls as 

 low as 'Jo ; death follows a more or less prolonged coma. 



TANRKT obtained by the action of ammonia on glucose 

 a number of bases, to which he applied the generic name 

 of M-lueosines. One of these, having the formula C U H, N 2 

 (C = 6), corresponds in its formula and its general proper- 

 ties to MORIX'S base (UI^X. (C = 12), and, in fact, the 

 two bas"s are considered by TAXIJKT to be identical. 



It is interesting to note in tkis connection that alkaloidal 

 have been found in petroleum by BANDKOWSKI, and 

 that similar basic siil-taii.-s have been detects! by WELLER 

 in paraffin oil. 



Most of the solvents in common use, such as alcohol, 

 ether, chloroform, hen/ole, petroleum ether, amyl alcohol, 

 etc., have been shown at different times to contain basic 

 pyridine compounds, though ordinarily in very minute 

 quantity. On the other hand, HAITINCJKU has found in 

 some specimens of amyl alcohol as much as 0.5 per cent, 

 of pyridine. 



SUSOTOXINE, C, H 26 N 2 (?), is a base isolated by \<>VY ill 

 1890 from cultures of the hog-cholera bacillus of SALMON 



