72 THE LUNG PLAGUE OF CATTLE. 



national bonded yards can be made subservient to such stamping out, 

 and an essential condition of it. 



The precision demanded in connection with such bonded yards may 

 be complained of at first as too severe, but it is absolutely essential to 

 any sufficient guarantee of soundness, and even the local dealers will 

 soon realize its advantages, for not only will it secure a valuable certifi- 

 cate of health for export cattle, but in the case of store cattle for home 

 sale it will be an assurance to the buyer that the animals are free from 

 liing plague. To the buyer such an assurance will be most acceptable, 

 so that readier and better sales can always be counted on. 



Should it be thought inexpedient to establish such bonded markets, 

 certificates of health could still be granted with cattle shipped from Bos- 

 ton and Portland, provided all movement of cattle out of infected States 

 is strictly prevented. This would, however, place a heavy incubus on 

 the export cattle trade of New York, Philadelphia, and Baltimore. 



DISINFECTION OF KAILAVAY CARS, SHIPS, ETC. 



This must be demanded and secured in the case of all cars or other 

 means of conveyance for taking cattle to or from the bonded market. 

 As the railways and ships coming to such market are at least in close 

 proximity to an infected district, and are liable to be used at any time 

 for the conveyance of infected cattle, or their infected products, it is es- 

 sential to success that they be disinfected in every case before the cattle 

 going to or from the bonded market are placed in them. The following 

 circular, prepared sometime since by this commission, covers this subject : 



CIRCULAR CONCERNING DISINFECTION. 



In view of existence of contagious pleuro-pneumohia of cattle at points near the 

 Atlantic seaboard comprised between 38 and 42 north latitude, the Treasury Cattle 

 Commission respectfully call the attention of all carrying companies and all others 

 engaged in the transportation or removal of cattle to the following suggestions for 

 the disinfection of cars, boats, places, and things in order to limit the spread of this 

 malady. 



1. DISINFECTION OF RAILROAD CARS. 



A. Cleanse the car with water (preferably boiling), scraping; or brushing off all filth ; 

 then, 



B, Wash the interior thoroughly with one of the following solutions : 



a. Chloride of liine, 4 ounces; water, 1 gallon. 



&. Sulphate of zinc, 4 ounces ; common salt, 2 ounces ; water, 1 gallon. 



This should be adopted for all cars that have been used for carrying cattle from any 

 herd within the infected area, or from stock-yards, or other places of detention or sale, 

 to which cattle from the infected districts have been admitted. This will include 

 the Union stock-yards, New York ; the Jersey City stock-yards ; the stock-yards at 

 Philadelphia and Baltimore, and any other cattle marts within the infected area, or 

 in its near vicinity. 



Persons moving store cattle within the districts in question should be especially 

 careful to secure the disinfection, as above, of'cars, trucks, arid other vehicles before 

 their stock are allowed to enter them. The same remark applies to yards, sheds, and 

 other buildings in which it may be necessary to detain cattle while in transit. 



2. DISINFECTION OF SHIPS, BARGES, ETC. 



All craft employed in the conveyance of cattle by water may be washed and disin- 

 fected in thtf same manner as cars. As an application to the main or lower deck, 

 however, the solution made with sulphate of zinc and common salt is to be preferred to 

 that made of chloride of lime, as the latter gives off vapors which are disagreeable 

 and irritating when confined in an inclosed space. 



In the case of steam vessels, the application of the disinfecting solution should be 

 preceded by si current of steam from the boiler directed through a hose upon all parts 

 of the surfacfe in succession. This, if universally applied, is an excellent disinfectant, 

 as the diseased germs cannot survive the temperature of boiling water. 



