Show W w VARIATIONS IONS IN CREAM CREA M TEST 1 r Common Cause of Dissatisfaction on On Part of Seller Use Seller Use of Tester Is lo Urged d by Expert of By C. C H. H ECKLES Missouri College Agriculture of ot Ono One of the most common causes dissatisfaction on the part of the man basis the butterfat who sells cream on rises from variations In the test This tested Is especially true If each can Is separately and the best way for tho the the tho himself that seller to convince tester is neither careless nor dishonest dishon dishon- dIB dishonest onest on- on him him- for little outfit est Is to secure a satisfactory satisfactory satisfactory satis satis- accurate and self A well-made well for be bought factory tester can now five dollars and Its use will not only satisfy the tho seller that ho Is getting honest treatment but will enable him hina hinato to detect the boarders In his herd The general Interest In this subject is la compelling the Missouri agricultural experiment station to reprint a cir clr circular circular cular for general distribution but a little discussion of the principal causes of variation In this briefer form may avoid the necessity for so wide wl e a distribution distribution dis die of that circular Speed of Separator A A change chango Inthe in inthe inthe the speed of the separator Immediately Immediate Immediate- ly causes a change chango in the tests of the cream the higher the speed the great greatt greater er the amount of skim milk thrown out and so the higher the test of the cream secured Putting it In another way a low speed results in n a larger quantity of thinner cream Rate of Inflow The The use of the float Insure a uniform flow does not always u of milk into the separator because the faucet may not always be opened equally wide and the flow will be more rapid when the tank Is full than when It is nearly empty Anything which makes the inflow more rapid will increase increase increase in in- crease the proportion of skim milk which goes goes through and lower the test of the cream secured Flushing the tho Bowl The The amount of water used In flushing may easily be varied a pint or more moro and this without without without with with- out any other cause or variation may change the test by two three or even four or five per cent Variations in the Milk MUk Itself The The milk mUk of an entire herd may rise or falin fall fal fallin fallin in its test from day to day because of excitement or change in the weather If the milk of a herd whose average test is four per percent cent Is ordinarily so BO separated that the tbt tb t cream ream tests 40 per cent fat the test will suddenly rise to per cent if it the milk of the herd is suddenly raised to per percent percent percent cent without any change in n method o of separating Cream Screw The The test is is- is o of course readily controlled by means of the cream screw but as it Is seldom changed In this way on the average farm there should be no trouble because because because be be- cause of variation from this source Feed Peed of or the Cow Variations Variations in cream tests are practically never caused by changes In the feed of the cow as every well-informed well cream seller is now aware Mistakes and Dishonesty Mistakes Mistakes are most likely to result from carelessness carelessness care care- In taking samples as they must bo be very carefully and skillfully taken If they are to tell teU the truth anc and result in a fair payment but actual dishonesty Is probably much rarer than many sellers believe A clever thief would manipulate the reported test in such a way as not to arouse the suspicion that an honest report sometimes brings up In the mind o othe of the man who does not consider all the possible hidden causes of variation |