SCIENCE AND INDUSTRY. — 
In the production of the ordinary vaccine, the methods used ‘are 
similar, in many respects, to those employed by Salimbeni, of the 
Pasteur Institute, Paris. 
‘It is’ believed that the vaccine technique of the laboratories leaves 
little to be desired. 
VACCINE DEPARTMENT. 
Tuberculin Department-—Owing to the fact that certain tuber- 
culins on the local market had been found to be totally ineffective, the 
tuberclin test in Australia had become very largely discredited. 
It was obviously desirable, in the interest of the physician and the 
veterinarian, for the Commonwealth Serum Laboratories to attempt to 
create a demand for tuberculin, and to meet that demand with an article 
which conformed to the classical requirements of Koch. 
The Tuberculin Laboratory is fitted with a specially large incubator 
for the growth of the cultures of B. tuberculosis. It has also a very 
large fume cupboard, containing, firstly, a sterilizer, in which the 
cultures are sterilized after they have attained the age of six to eight 
weeks; and, secondly, evaporating baths,-on which the killed cultures 
are reduced to one-tenth of their volume, in the production of crude 
tuberculin. 
Apparatus is also provided for filtering the crude tuberculin, so that 
a transparent, sterile filtrate is obtained, to which .5 per cent. carbolic 
acid is added. This constitutes the old tuberculin of Koch. Very many 
tuberculins have been made by Koch, and since his time, but it seems 
very doubtful whether any of them is superior to his original old 
tuberculin. ; TOS 
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