THE RELATION OF THE LABORATORIAN TO THE PRACTITIONER. 
313 
The tests now used for this disease are known as the sub¬ 
cutaneous, ophthalmic and intradermal tuberculin. Through 
the use of them there has been carried on a great work in the 
eradication of tuberculosis. 
Glanders is another important disease and is worthy of the 
efforts of both the laboratorian and practitioner. 
The various tests given the profession by the laboratory I 
will merely name, as there is too much to them to go into detail 
in this paper. The following are recognized by the profession 
at this time: Auto-inoculation; extirpation of submaxillary 
gland and examination for Bacterium mallei; Strauss’ method 
of guinea pig inoculation; mallein; subcutaneous, ophthalmic 
and cutaneous test; serum agglutination; precipitation; Konew’s 
modified precipitation; complement fixation; potato test culture, 
and lastly, the combined complement fixation and agglutination 
tests for which the Bureau of Animal Industry showed the 
greatest preference in their last report. 
In dealing with the parasitic infestations the practitioner very 
frequently is confronted with cases that would baffle him en¬ 
tirely, if it were not for his laboratory training and he did not 
resort to that means for reaching an intelligent diagnosis. 
Tumors are another source of grief to the untrained prac¬ 
titioner, in that he cannot, with any degree of positiveness, dif¬ 
ferentiate between malignant and benign growths without the 
aid of the laboratory technique, methods, microscope and labora¬ 
tory science. 
Without the assistance of the laboratory the practitioner 
would be at a loss to properly diagnose or differentiate between 
various poisons as met with in his practice. 
Milk and its products as handled and distributed is a very 
easy medium to adulterate and contaminate, thereby requiring 
the scientific inspection of competent laboratory men to discover 
it. So therefore it is of the utmost importance that nothing but 
conscientious, honest and progressive laboratorians be employed 
to safeguard the public health and their welfare, through this, 
one of the most important food products. 
