188 



MICROBES AND THE MICROBE-KILLER. 



FIRST SERIES OF EXPERIMENTS. 



Silk threads were impregnated with the microbes of 

 scarlet fever, tuberculosis^ typhoid fever, Asiatic cholera^ 

 diphtheria, glanders, and influenza, which were then im- 

 mersed in Eadam's Microbe-Killer. In each case the 

 microbes were completely destroyed by its action. The 

 destruction of the microbes in each case was proved by 

 no growths making their appearance in various nourish- 

 ing media, as well as by other well-known bacteriologi- 

 cal methods. 



SECOND SERIES OF EXPERIMENTS. 



Radam's Microbe-Killer was added to a number of 

 tubes containing pure cultivations of the seven microbes 

 already mentioned in this report, with the result that 

 the microbes of scarlet fever, tuberculosis, typhoid fever, 

 Asiatic cholera, diphtheria, glanders, and influenza were 

 destroyed by its action. 



THIRD SERIES OF EXPERIMENTS. 



The object of these experiments was to ascertain 

 the germicidal power of Radam's Microbe-Killer when 

 sprayed into ordinary dwelling-rooms. The number of 

 microbes present in three gallons, or fifteen litres, of air 

 was ascertained by Professor Hesse's method (see Dr. A. 

 B. Griffiths' ''Manual of Bacteriology," p. 265, Heine 

 mann). The figures in the following table represent the 

 average number of microbes (colonies) in three gallons 

 of air, before and after spraying with Radam's Microbe- 

 Killer : 



There is no doubt that Radam'^s Microbe- Killer is a 



