BACTERIOLOGY IN A NUTSHELL. 



Multiply the number of minims by the per 

 cent solution required and the result gained 

 will be the amount of drug in minims for each 

 pint of solution. Divide this sum by sixty 

 (60), the number of minims in a dram, and 

 you will have the quantity to be used in drams. 



Example. — To make one pint (OI) of a five 

 per cent solution: 



7680 X .oS=384.oo-r-6o=6.40, or about 

 six and a quarter (6^,) drams of the drug to 

 each pint of water. 



For a two per cent solution proceed as be- 

 fore: 768oX-02=i53.6o-=-6o=2.56, or about 

 two and a half (2^) drams to each pint of 

 water. 



SUMMARY OF CHAPTER VII. 



Harrington's Solution — Strength used. 



Carbolic Acid Solution — its value as a dis- 

 infectant. Its preparation and uses. Its un- 

 certainty in destroying spores. 



Bichloride of Mercury Solution — ^prepara- 

 tion and uses. Its power to unite with albu- 

 minous substances. 



Use and care of Peroxide of Hydrogen. 



Safe method of disinfecting excreta. The 

 preparation of lime for such purposes. 



Lysol andCreolin as safe antiseptics. 



Advantages and disadvantages of Potassium 

 142 



