The Montgomery advertiser., 1905-04-10
Test of Coz, Tar DI,s.

NSt NOHI INT DlpSs
 Bulletin No. 62 of the Oklahoma Ex- pertinent Station at Saltwater reports the results of laboratory tests of the disinfecfng power of coal tar dips The bulletin gives detailed tables showing the length of time required by several solutions to kill different disease germs and contains the following statement concerning the practical application of results:
 In any community where stock rais- ing is the principal industry there is prevalent at all times some of the va rious diseases caused by parasites or bacteria, that require some form of treatment in order to cure the disease or limit its spread. In many of the skin diseases, the use of some effective remedy will act both as cure and as d means of prevention. Remedies used in connection with infectious diseases should not be used merely as a cure. but they are used much more effectively Tn many cases as a means of preventing the spread of the disease. The use of such preparations as will free the skin or parasites, such as lice, mango, mites etc, or that will destroy the germs of such diseases as are common among farm animals, is coming to be very ex- tensive since it is generally understood that such skin diseases can be cured or infectious diseases prevented from spreading by the use of some effective disinfectant.
 The coal tar preparations that were tested in this experiment are widely advertised as dips for all forms of ex- ternal parasites. especially for sheep scab. mango in cattle and for hog lice In another report 1t is expected to show the value of such preparations on skin parasites and on some, of the skin dis eases.
 All of the disinfectants tested, that properly come under the head of coal tar preparations. are good disinfec- tants, they are cheap and non- poison ous, and should be extensively used where disinfectants are necessary.
 The practical application of disinfec- tants is of importance to one handling stock. Even when there is no con tagious or infectious diseases that would require the use of such remedies there is hardly time on stock farm when there is not occasion to use such remedies In dressing sores, wire cuts, etc. The cOal-tar preparations are not irritating and may be used in wounds or sores without injury to the tissues. Such diseases as hog cholera, swine plague, glanderS. etc, are infectious and animals may easily contract them by being placed in stalls or pens where diseased animals have been. In order to lesson the danger from such infec- tion, it Is necessary to use disinfectants of some kind or allow the stables or pens to go unused for sufficient length of time for them to become disinfected by drying and sunlight. If some dis infectant Is to be used choice may be had of large number of chemicals, but some one must be selected that is suit able for that particular work. Any disinfectant that can be used in the form of a liquid may be applied in the form of a spray or by means of broom or mop. A per cent solution was used in all of the laboratory tests and this strength was found to be effective In most eases, but the work was done un- der very different conditions from those usually met with in actual prac- tice. To disinfect a stall. harness or wood work of any character. 2 per cent solution should be used and suf- ficient fluid applied to thoroughly wet the material to be disinfected When lot of any considerable size becomes infected 1t is not practicable to at tempt disinfecton by using any chemi- calls. The amount of material required to make the work thorough would be too expensive. Exceptions might be made where very small enclosures such as small chicken runs, etc, become in- fected
 As has been mentioned before, to make use of these preparations in actual work. it is recommended to use at least per cent solution. To make this would require one gallon of tho dip to fOrty-nine gallons of water or larger amounts could be made in the same proportion. For small amounts use one ounce of the dip to three pints of water.
 When the various coal-tar dips were used in a 1 per cent solution they were effective disinfectants in laboratory ex- periments but in practical work al least 2 per cent solution should be used. They are equally as good and in some of the tests proved to he better disin- fectants than carbollc acid when used In the same strength The coal tar dips are non poisonous and are not IT, ritating to tn eskin or when used in wounds. As compared to carholic acid they were certainly as effective are cheaper and are not so dangerous to use. The coal-tar preparations tested are not only good dlsinfectants, but are also good deodorizers.-Farm and Ranch.