194 Disinfectants 



5 c. cm. (cubic centimeter) is a little less than 1 teaspoonful. 

 10 c. cm. or (cubic centimeter) equal 10 grammes. 

 One pint is approximately 480 cubic centimeters. 



DRY MEASURE 



Medicines should be weighed if possible. A small scale docs not cost 

 much. 



20 grains, 1 scruple 



3 scruples, 1 dram or approximately 1 teaspoonful, 60 grains 



8 drams, 1 ounce or approximately 2 tablespoonfuls or 8 teaspoon- 

 fuls 



1 pound, 12 to 16 ounces. 



DISINFECTANTS 



A 1 per cent soluton is 3 tablespoonfuls to 1 gallon, or U/o tea- 

 spoonfuls to the pint. 



A 2 per cent solution is 6 tablespoonfuls to 1 gallon, or 3 teaspoon- 



fuls to the pint. 



A 3 per cent solution is Ql/o tablespoonfuls to 1 gallon, or 41/2 tea- 

 spoonfuls to the pint. 



A 4 per cent solution is 13 tablespoonfuls to 1 gallon or 6 teaspoon- 

 fuls to the pint. 



A 5 per cent solution is 15 tablespoonfuls to 1 gallon, or 6 teaspoon- 

 spoonfuls to the pint. 



Disinfectants are used to kill or retard disease germs. Carbolic acid 

 and dips are more often used around the farm. A 3 per cent solution 

 of potassium permanganate is as effective as a 5 per cent of either the 

 carbolic acid or sheep dip as a disinfectant. The effectiveness of car- 

 bolic acid is greatly increased by adding an equal amount of hydro- 

 chloric acid. The crystals of potassium permanganate placed in earthen 

 jars and sulphuric acid poured on it m-^kes the best known disinfectant 

 for a building that can be closed 4 or 5 hours. Anything shut in the 

 building that has animal life will die. It will penetrate clothes in a 

 tight trunk or bedding. 



