BACTERIA IN THE DAIRY. 1a; 
IX.—A YEAR’S EXPERIENCE WITH BACILLUS 
No. 41 IN GENERAL, DAIRVING. 
PY er.e Ws, CONN, 
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The last two Annual Reports of this Station have contained 
accounts of the use in the ripening of cream for butter making, 
of a bacterium which has been called ‘‘ Bacillus No. 4r1.’’ 
This organism was originally obtained from a specimen of 
milk from Uruguay, South America, which was exhibited at 
the World’s Fair in Chicago, and among a large number 
of. species that were used in laboratory experiments upon 
cream ripening, this proved the most satisfactory. During a 
period of a year the organism was studied in the laboratory, 
and practical tests of its action in the ripening of cream and 
making of butter were made in the neighboring creamery in 
Cromwell with the intelligent and skillful co-operation of the 
Superintendent, Mr. HE. D. Hammond. ‘These: experiments 
have been described in detail in the publications of the Station 
above mentioned. The general conclusion was that the organ- 
ism, Bacillus No. 41, was of practical value in cream ripening, 
for the purpose of producing flavor in butter. After the 
demonstration by strictly scientific methods that the organism 
does have the power of producing the desirable butter flavor, 
it appeared desirable to extend the experiments from the) 
limits of the laboratory and a single creamery, in order to learn | 
whether the butter-makers of the country, in general, could. 
obtain the same advantages from the organism that had been | 
obtained in the single creamery where the practical experi- | 
ments had been performed. There appeared to be only one! 
way of doing this. The butter-makers in the country would 
not, of course, lend their creameries for experimental purposes, 
unless they were convinced that it was to be of direct advan- 
tage to them, and the only way in which the experimenting 
could be extended was by announcing the results that had 
been obtained in the Cromwell creamery and assuming that 
similar results could be obtained elsewhere. 
