The inspection system has been extended so as to include the 
frontiers bordering upon both Canada and Mexico. The principal 
problems in this case are to prevent the importations of animals carry - 
ing the contagion of glanders, tuberculosis, sheep scab, and Texas fever. 
Tuberculosis is the most difficult to detect, and, in order to guard against 
it so far as possible, cattle for breeding or dairy purposes are tested with 
tuberculin. This test is also applied to cattle imported through the At- 
lantic ports. 
Notwithstanding the numerous sources of disease in countries from 
which animals are imported, and the vast numbers of such animals 
which are annually brought to our country from abroad, the Bureau has 
successfully protected our animal industry from this danger. 
DISTRIBUTION OF LABORATORY PRODUCTS FOR THE CONTROL 
OF DISEASE. 
A great work has been done by the Bureau in the preparation of 
certain laboratory products used in controlling animal diseases. The 
preparation of tuberculin was undertaken soon after its discovery, and 
this article and mallein have been furnished to State authorities to be 
used in the diagnosis of tuberculosis and glanders. More recently the 
manufacture and distribution of a vaccine for blackleg in cattle has 
been very successfully conducted, and more than one million doses are 
now used per annum. ‘These laboratory products are made at very lhttle 
expense to the Government and have become essential in combating the 
diseases mentioned. 
DAIRY WORK. 
One of the most important sections of the animal industry is that 
devoted to dairying—the production of milk, butter, and cheese. Recog- 
nizing the great amount of capital invested in such work, a dairy di- 
vision was created in the Bureau, and efforts have been made to collect 
and distribute information, to keep in touch with those engaged in the 
industry, and to assist in building up an export trade to foreign coun- 
tries. The success of this line of work is unquestioned. The dairy 
bulletins have done much in an educational way, and the experimental 
exports of dairy products have demonstrated the excellence of American 
dairy products. 
PRESENT ORGANIZATION OF THE BUREAU. 
In 1891 it was found that the growth and extension of the work of 
the Bureau made it desirable that it should be reorganized into a number 
of distinct divisions, in order that it might be better systematized and 
directed. There have been formed, up to the present time, the following 
divisions : 
(1) The inspection division, to which is assigned work of an execu- 
tive nature, including the eradication of contagious diseases, the inspec - 
tion of export and import animals, meat inspection, vessel inspection, 
and the regulation of the movement of Southern cattle (to prevent the 
spread of Texas fever). 
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