of Edinburgh, Session 1883-84. 
639 
Carbolic Acid Powders. 
Since it seemed improbable that merely sprinkling the powder 
on tbe infected “fluff” would reach all the spores, the powder was 
added in weighed quantities to water, and was also made into a 
paste with water, and in the paste the glass rod containing the 
infected rods allowed to remain for various periods of time. 
Calverfs Pink Carbolic Acid Powder, in luater 5 ]per cent . — The 
spores acted on by this disinfectant for twenty-four hours were 
removed and cultivated on gelatin-pork as well as in broth. In each 
case growth, as compared with a comparison cult, was delayed ; but 
by the end of four days the growth was luxuriant. 
On making a paste with water, and allowing the spores to rest in 
the paste, even so long as twenty-four hours, no germicide effect 
was noticeable. As before, the growth was delayed. 
Other carbolic acid powders were obtained from various firms, 
and tested, with no better result. 
Liquor Carbonis Detergens . — This is a solution of certain coal-tar 
products in spirit. It forms with water an emulsion. 
Added to water in the proportion of 5 per cent., it had but feeble 
influence in preventing the subsequent growth of anthrax, 
A 10 per cent, solution, acting for four hours, distinctly retarded 
growth ; for the spores, whether on gelatin-pork or in the broth, did 
not commence developing for twenty-four hours. 
Undilated “ liquor carbonis detergens,” acting for four hours, 
arrested future growth. 
Jeyed Fluid . — Apparently a solution of various principles derived 
from coal-tar. It forms a thick emulsion with water. 
It was necessary in this instance, after soaking the infected 
threads in the liquid, to free it from the thick emulsion by alcohol. 
Four experiments showed that in a 5 per cent, solution — that is, 
such a solution as in practice might be used — it was not an efficient 
germicide. 
Jeijes' Poivder bears the same relation to Jeyes’ liquid as the 
carbolic acid powders to carbolic acid. 
The powder was made into a paste with water, but seemed to 
have no definite effect on the anthrax spores. Growth after twenty- 
four hours’ cultivation was active. 
