52 



not to allow the milk of tubercular cows to be consumed, as 

 there is an element of danger. 



The presence or absence of the bacillus does not help us to 

 say whether the milk is infective or not. Hirschberger has 

 been able to produce the disease by introperitoneal injection 

 when no bacilli were present in the milk, and from this he 

 infers the infection was present in the form of spores. 



Woodhead. and McFadjean examined 600 cows in Edin- 

 burgh and found 37 of them tubercular, but got the 

 bacillus in the milk of only six of them. 



And the experiments made for the recent Royal Commis- 

 sion show that in tubercular affections of the udder the 

 bacillus was invariably present, and animals fed or inoculated 

 with the milk contracted tuberculosis. 



Dr. Sydney Martin's report is as follows : — " Five tuber- 

 culous cows with udder disease found ])ost mortem to be of 

 tuberculous nature ; bacilli were found in milk of three. 

 Fifteen (15) test animals fed and thirteen (13) inoculated 

 with the milk of these three cows all acquired the disease. 

 Of the other two cows the milk (in which no bacilli were 

 found) from one produced tuberculosis in four out of ten 

 test animals fed on it, and when inoculated in six other 

 animals produced tuberculosis in all. The milk of the fifth 

 cow did not j)roduce tuberculosis in two animals to which it 

 was given as food, but did produce tuberculosis in two other 

 animals when it was inoculated." 



If bacilli cannot be found in the milk then the only test is 

 inoculation, and this means the employment of a skilled in- 

 spector. 



(5.) Meat. — The danger of contracting tuberculosis from 

 meat is not so great as the taking of milk from tuberculous 

 cows, but it is nevertheless a source of infection if meat is 

 not properly cooked. 



When the disease is localised it is thought by some that 

 there is little risk of eating the part of the carcase unaffected, 

 but Professor McCall, of Glasgow, has shown that the bacilli, 

 although not having their habitat in the blood, have been 

 found there as well as in the marrow of bones. The authori- 

 ties in Grlasgow, acting on this, condemn the whole carcase. 

 The Congress in Paris affirmed the necessity of these stringent 

 measures, and many cities followed the example of Glasgow. 



Klein is also of opinion that, inasmuch as the tubercular 

 virus gets disseminated through the blood, any organ may at 

 any time become infected with the virus — which is in transit. 

 The organ need not contain any discernible tubercular 

 deposit. 



