About oue-eiglith as much will probivbly jirove fatal to a persoii 

 two years old. 



About one-tenth as much will probably prove fatal to a person 

 one year old or under. 



Blyth in his "Poisons, their Effects and Detection" states that the 

 following doses of arsenic may be considered as dangerous : two 

 grains for an adult, thirty grains for a horse, ten grains for a cow, 

 one-half of a grain to one grain for a dog. 



There are numerous cases on recoid of recovery after enormous 

 doses. In nearly all these cases, however, two conditions are 

 recorded : first, that the poison was taken after a full meal, and 

 secondly, that very early and free vomiting occurred. This, indeed, 

 is doubtless the explanation of many cases which otherwise appear 

 inexplicable. 



TREATMENT FOR ARSENICAL POISONING. 



Never neglect treatment because the case seems hopeless. As a 

 rule vomiting sets in spontaneously, and, if the poison has been 

 taken on a full stomach, the whole of it may be gotten rid of. If, 

 however, the poison be taken on an empty stomach, it sticks to the 

 walls and sets up an intense inflamation. 



It should be the endeavor first to get rid of the poison, and to this 

 end. Woodman and Tidy, in their work on Forensic Medicine and 

 Toxicology, advise the administering of hot milk and water, and 

 " emetics of sulphate of zinc or mustard ; at the same time the 

 throat should be tickled with a feather, but in no case should anti- 

 mony' be given. After free vomiting, give milk and eggs. Sugar 

 and magnesia in milk is a good mixture, an insoluble compound with 

 arsenious acid being in this way formed." Whatever active measures 

 are taken in case of poisoning, one should not neglect to call a phj'- 

 sician as early as possible. 



PARIS GREEN. 



Arsenite of Copper, generally containing an excess of arsenic. It 

 varies somewhat in composition, hence, no absolute percentage table 

 can be given, but there is generally over 50 per cent, of arsenic in 

 that which has not been adulterated. The commercial Paris Green 

 is undoulitedly more or less adulterated, and that sold in the market 

 for the destruction of insects probably never contains more than 50 

 per cent, of arsenic, and may contain no more than 30 per cent. If 

 the average is between these percentages, a fatal dose would be from 



2 



