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"As regards dirt, many of the samples contained traces, but only sample No. 18 was found
"to contain a moderate amount of dirty deposits on centrifugalization.
"As regards tubercle, four animals died within one month of inoculation—three of wasting,
" and one from unknown causes. These have been excluded from the calculations. One animal
"which died 33 days after inoculation, and the remaining 43, which were killed six weeks after inoculation,
making 44 in all, are included. Of these 44 animals, four were found to be tuberculous.
On this basis, therefore, 9.1 per cent. of the samples of milk have been found to
"contain living tubercle bacilli."
The details in connection with the samples from which the guinea-pigs found to be affected
with tubercle were inoculated, were forwarded to the medical officers of health for the areas in
which the farms responsible for the samples were situated, and the following are extracts from
reports which have been received indicating the conditions ascertained.
Sample No. 2.
The County Council's Veterinary Surgeon inspected the dairy herd at the above-mentioned farm, on
16th December, 1932. He found three cows markedly affected with induration of the udder, and reported
to me as follows :—
" I have collected a sample of milk from each of the above cows and forwarded Same to County Bacteriologist,
East Suffolk County Laboratories, Ipswich, for biological examination.
" Two cows have gone dry since the positive sample was taken (15-9-32), i.e., black-and-white cow,
No. 1 ; Red-roan cow, ' Endore.'
" No cows have been sold since the positive sample was taken (15-9-32).
" Included in the total number inspected are five cows which are dry at present."
A later report revealed the presence of two tuberculous cows in the herd.
Sample No. 35.
There were 47 cows ; of these, three were dry, No. 4 and No. 32, and one cow with no number Four
special samples of milk were taken and eight mixed milk samples ; these have been submitted to the County
Laboratory for bacteriological examination. Tuberculin test was performed upon two animals.
I should have written to you sooner, giving the above information, only I hoped to be able to include
a copy of the post-mortem results of the two cows which were tuberculin-tested, as these re-acted ;
however, the valuation has not yet been settled, and, meanwhile, these two animals are isolated.
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