462 GERMICIDES — DISINFECTANTS 



tion in sterile cold 'water. Doses are: for small dogs 2 mils (30 

 minims), large dogs 15 mils (pne-lialf Ounce,) intravenously or sub- 

 cutaneously. Intravenous administration is to be .preferred on ac- 

 count of liability of abscess formation, from bypodermic use. Dose 

 for cattle is 150 mils (5 ounces) to 200 mils (6% ounces). We 

 ■have given 100 mils (3^^ ounces) of a one per cent, solution to a 

 full grown setter without producing any alarming symptoms. The 

 tissues are all stained blue from injections of this remedy but grad- 

 ually clear up. 



* Scarlet Red. Scarlet red is an aniline dye which has only 

 recently been used as a stain. 



It occurs as a dark reddish-brown powder, soluble in 15 parts of 

 chloroform, easily soluble in oils, slightly soluble in alcohol and 

 ether and insoluble in water. It has been found nseful as a dress- 

 ing for healthy ulcers and wounds and to promote the proliferation 

 of skin. Hoare says, " It should not be left on longer than 48 hours, 

 or marked irritation will occur." It is employed in the form of an 

 ointment of from 4 to 8 per cent. 



Scarlet Eed Ointment is a salve containing 8 per cent, of scarlet 

 red, 2 per cent, of oil of eucalyptol and 90 per cent, of petrolatum. 



OXIDIZERS AND DEOXIDIZERS 



Oxidizers act by liberating oxygen and are quickly destroyed. 

 As a rule they are only medium grade disinfectants but good deodor- 

 izers. They quickly destroy many colors and are used as bleaches. 

 Most important are: 



Liquor Hydrogenii Dioxidi — Hydrogen peroxide. 

 Potassii Permanganas — Permanganate of potash. 

 Sodii Per Boras. ' ' 



Chlorine. 



OXYGENIUM — OXYGEN 



Oxygen is a colorless, odorless, tasteless gas, slightly soluble in 

 water and neutral to ordinary indicators. For medical purposes 

 it should be neutral to litmus and free from chlorine or ozone. 

 Oxygen is marketed in cylinders under considerable pressure. The 

 amount of oxygen is usually determined by weight. 



Action. In health the inhalation of oxygen has no effect other 

 than to increase the rate of the heart and raise blood pressure. 



Therapeutics. Oxygen is used in veterinary medicine almost 

 entirely in the treatment of parturient paresis of cattle and in this 

 condition there is doubt of its being any more efficient than injec- 

 tions of sterile air. In human medicine it is used in conditions 

 * Unofficial. 



