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    " I have previously sat with Lieutenant-Colonel Hutchinson
on a committee to discuss tuberculosis from the public health point
of view. I know that he is an authority on the subject.

    " I will ask him to give us his views."

    Lieutenant-Colonel Hutchinson stated that what he particularly
wanted to urge was the immense importance of undertaking further
investigations with regard to the whole problem of tuberculosis
in India. At the present time they were merely groping in the dark.
The prevailing impression was that tuberculosis of cattle was a rare
disease in India, but from the returns which had been derived from
the village officers for many years, it could well be seen that it was
an important disease in man. Human tuberculosis was related
mainly with industrial development, and in certain old established
centres of industry, such as Bombay, the mortality from tuberculosis
was high. The high incidence in industrial centres, however, was
gradually becoming reflected in rural areas and undoubtedly was
connected with the migration of workers. In some rural areas it
had now become a serious disease. The important point was to get
reliable evidence with regard to the proportion of cases of human
tuberculosis due to infection with tubercle bacilli of bovine origin.
So far as one could gather it would appear that by far the greater
proportion of cases of tuberculosis in adult human beings traceable
to bovine origin was that which comprised tuberculous disease of
the bones and joints, the so-called " closed " tuberculosis. The
other forms of tuberculosis were regarded for convenience as cases
of " open " tuberculosis. It appeared that the percentage of cases
of the closed type was practically the same in India as in other
countries. He had attended the International Conference on
Tuberculosis in 1920 and compared the figures obtainable from India
with those of the whole world. The figures obtainable were derived
from the cases which came to hospital for treatment. About 18
per cent. of the cases fell into the " closed " type, and this figure was
almost exactly the same as that representing the incidence of this
type in any other country. The mortality figures of Bombay city
indicated that only 10 per cent. were due to the closed type. In
Calcutta the proportion was less, namely, 5.5 per cent. He referred
to the recent work of Stanley Griffiths upon the strains responsible
for the " closed " type of tuberculosis. Out of 132 cases of the
"closed" type examined, 13.6 per cent. were due to the bovine
strain. Of the persons under 16 years of age, 20 per cent. were due
to the bovine strain. In persons over 16 years of age it was just
over 6 per cent. In India, the work hitherto done had been some-
what sketchy, and the number of cases investigated very small;
so far as he was aware the bovine type had not been isolated from