BACTERIOLOGY IN A NUTSHELL. 



lution, add three quarts of warm sterile water 

 to your quart of i-i,ooo solution, and you will 

 have the desired strength. If only a small 

 quantity, say one pint of the solution 1-4,000 

 is needed, take four ounces of the 1-1,000 solu- 

 tion and add to it twelve ounces of water of 

 the required temperature. In using the bi- 

 chloride of mercury powder (corrosive subli- 

 mate), dissolve seven and one-fourth grains 

 (grs. 7>4 ) in each pint of water. Nurses must 

 not forget that it is a strong corrosive poison. 

 Sublimine, which is another preparation of 

 mercury, called ethylenediamin-sulphate of 

 mercury, is used for all purposes in which 

 bichloride of mercury solutions are used. It 

 is considered by some to be less irritating than 

 bichloride of mercury and alcohol to remove 

 oily substances from the skin prior to its use as 

 A disinfectant is unnecessary. Strength of so- 

 lutions from 1-10,000 up to 1-300. 



Peroxide of Hydrogen (Hydrogen Diox- 

 ide), also called "dioxygen," is considered by 

 many surgeons to have no equal either for 

 safety or efficiency in treating cavities or sur- 

 faces secreting pus. This preparation must be 

 kept tightly corked, as it will otherwise dete- 

 nt in riorate in value very rapidly, and in a cool, dark 

 Dark Place. place; heat and light spoil the preparation. 



Intestinal Evacuations may be safely 

 disinfected by pouring upon them three times 

 130 



