44 STORRS AGRICULTURAL EXPERIMENT STATION. 
Rich cream is also more viscous, and when measured with a 
pipette less will be delivered. The error from measuring cream 
for the Babcock test is considerable, as is illustrated.in the fol- 
lowing table. Patrons of creameries, especially those deliver- 
ing separator cream, should insist that the sample for Babcock 
testing be weighed. 
In this table the third column gives the weight of 18 cc. of 
cream. ‘The fourth column gives the average reading of the 
duplicate tests. The fifth column gives the corrected reading 
for 18 grams. The last column shows the error that may re- 
sult from measuring samples. 
TABLE 13. 
Lrror tn Measuring Cream for Babcock Test. 












= 3] 5 bh 
g “ Z : : 
& ne nk Ss as 
No. oF SAMPLE. © is oe ms 5 3 
5 a ro) a) nS 
3 on a 0 bap 
iC ia g : a 
> iS i 8 | 
jee | Grams, % % % 
ING gbloe : : ate ie cI ee abt. 393 15.25 14.97 + .28 
NO AQ - - <5] “ATO ae 205 19-12 18.90 + ae 
INO. F395 e501- = A ne eT On MR Oe OG 23.00 22.89 mi oe 1 
INO Ag Sve - . epee | eet Bolen hea hm aha ey or Os 2 ey 
INGE Ge hos - . Sth rade 17.892 31.50 | 31.70. 7) 3 =o 
ING?.G. ints 3 : = Gt 8 17.770 Whim ty 37.58 — .46 
No go = = : <del ia GT 41.88 43.07.) | oie 
NoOMBe a) = - Sots ed as en Mees yrs 45.88 47.54 —1.66 
Nong neha = - ieee lure sv ame) ier pee BF AOS3S Gn | 36 L106 = 28 
ING.UTO, = - - oc) HO Ny Ea he mete Open 54.12 57.00 \) ano 
Nios shew e 5 ‘ ey Oh) 18 tet Orem 53237 63.49 | —5.12 
PURE CULTURES IN BUTTER MAKING. 
The use of pure cultures in cream ripening is coming into 
more common practice with our best butter makers. There is 
no doubt that there is an advantage in these cultures, especially 
where it is difficult to secure good material from which to make 
“home-made starter.’’ The advantage of a pure culture 
over a home-made starter will .be more apparent, therefore, in 
a creamery than in a private dairy, and in the gathered cream 
system than in the separator creamery. 
During the past year our butter maker, Mr. D. D. Kinne, 
divided fourteen lots of cream into two equal portions, and 
\. “at ereer 
> i 
