﻿Manchester Memoirs, Vol. xlix. (1904), No. 1. 7 



No. 4, age 24, yj^th. 



No. 5, age 32, ^j-th. All these four were labourers in 



nickel and cobalt works. 

 No. 6, age 38, copper smelter (r^yth, 1 part of this 

 sample was mixed with an equal volume of 

 No. 1). 

 Dr. P. Bennett, of Sheffield, was good enough to send 

 me five samples, the results from which are shewn in 

 Plate II, Fig. 1. 



*No. 1, age 42, collier, moderate drinker, lived in dis- 

 trict 6 years, y^th of a grain per gallon. 

 No. 2, age 53, pearl grinder, moderate drinker, lived 

 in district all his life, o^th. 

 *No. 3, age 60, labourer, moderate drinker, lived only 



in this district. 

 *No. 4, age 44, collier, moderate drinker, lived in dis- 

 trict 20 years. 

 No. 5, age 35, shop assistant, lived in district 10 



years, ^^th. 

 Lastly it suggested itself to me that the urine of 

 people who live in districts where only peat is burned 

 should be free from arsenic. I therefore wrote to my 

 friend, Mr. A. A. Chisholm, Procurator Fiscal, of Loch- 

 maddy, Hebrides, who sent me six samples from six 

 different persons who live in houses where only peat is 

 burned. All these were absolutely or practically free 

 from arsenic. See Plate II, Fig. 2. 



MILK. — It seemed probable that, if the secretions 

 from the kidneys contain arsenic, milk might also contain 

 it, and I sent to two different shops in Manchester and 

 purchased some, I also obtained one sample from Chorlton- 



* There was not sufficient of 3 and 4 together for the test, so that 14 

 parts of No. I, 13 parts of No. 3, and 23 parts of No. 4 were taken, and 

 these gave x^-^th of a grain per gallon. 



