558 KEPOET OF NATIONAL MUSEUM, 1887. 



In the following table are given the approximate prices of chemicals 

 which have been referred to in this paper: 



Alcohol, 95 per cent $2. 50 per gallon. 



Arsenic acid, Merck's 40 per pound. 



Arseniate of potash do. 



Arsenic, white 10 do. 



Benzine 15 per gallon. 



Bisulphide of carbon 25 per pound. 



Burnt alum 10 do. 



Camphor 25 do. 



Carbolic acid, Calvert's solution 60 do. 



Chloroform 75 do. 



Corrosive sublimate (mercuric chloride) 90 do. 



Ether 85 do. 



Glycerine - 30 do. 



Menthol 50 per ounce. 



Naphtha per gallon. 



Naphthaline crystals 25 per pound. 



Naphthaline cones 1.25 per 100. 



Naphthaline "moth marbles" 10 per box. 



Oak bark, powdered, or tannin. .. 10-.25 per pound. 



Oil of lemon 20 per ounce. 



Salicylic acid 2.25 per pound. 



Saltpeter 35 do. 



Sal soda 05 do. 



Strychnine 20 per jounce. 



Subearbonate of potash 25 per pound. 



Thymol 60 per ounce. 



Vaseline, Cheeseborough's 50 per pound. 



