244 Report of the Chemist of the 



with the two samples examined, it appears to be very variable in 

 composition. Paragrene is manufactured by Fred L. Lavanbnrg, 

 165 William St., K Y. City. 



BLACK DEATH. 



This material is made by the Oatka Chemical Co., Mumford, 

 IN". Y. The sample examined was obtained at Canandaigua. It 

 consists largely of sulphate of lime or gypsum. It contains a very 

 small amount of arsenic and some organic matter not determined. 



SLUG shot. 



This is manufactured by Benjamin Hammond, Fishkill-on-Hud- 

 son, 'N. Y. The sample examined was secured at Cuba. The 

 material is largely sulphate of lime and silica, with small amounts 

 of copper and arsenic compounds. 



LONDOI^ PURPLE. 



London purple is a by-product in manufacture of dyes. It is 

 very variable in composition. The arsenic is present chiefly as a 

 calcium arsenite. The sample examined was found at East Au- 

 rora, and came from Hemmingway's London Purple Co., London 

 and "New York. It contained 32.88 per ct. arsenious oxide. 



LAUREL GREEN. 



This is made by the Nichols Chemical Co., New York, and 

 the sample examined was found at East Aurora. It was found 

 to contain 3.83 per ct. arsenious oxide and 11.50 per ct. copper 

 oxide with large amounts of calcium carbonate and calcium hy- 

 doxide (slaked lime). 



smith's electric vermin exterminator. 



This is made by Fernando B. Smith, Canton, O. The sample 

 was taken at Jamestown. It appears to be mainly a mixture of 

 calcium carbonate and calcium hydroxide (slaked lime) with a very 

 small amount of organic matter. 



