On the subject of milk tesf’ng an exchange says :—Better still would it be if all milk were separated at home, ns i lie separator world be the tester, and the cream could then be conveyed to the faGoiy. This Bystem is coining largely into vogue in other parts, and hrs other advantages apart from the ineio fact of doing away with the vexed test question. Les 3 weight hrs to be hauled along the roads during w’nier ; this is another advantage in home sepal ating that has to be reokoned on in localities where the roads are bad ; but greatest of all benefit is that the spread of tuberculosis is minimised. If a herd be clear of disease there is no danger of introducing disease from out side herds, as is the ouse when factory skim milk, the accumulation of the distriot, is fed to the calves. This is an advantage that makes even the question o“ test fade into insignificance when compared to the higher principle of eradicating disease. Some of the large American rail road companies are engaged in experi mental grain growing on dry tracts of land near their lines. What is known as the “ Campbell system ” of culti vation is followed. The soil is first thoroughly pulverised 3in or4in with a disc plough or harrow. Then the land is ploughed Bin or lOin deep, turning the fine topsoil into the bot tom of the furrow, and a surface packer packs the substratum firmly, leaving the topsoil loose 3in deep. In the spring the ground is thorough'y harrowed and the wheat drilled in 24in or fOin apart, for cultiva tion during the summer. A wide machine is used, so that a man and two horses can go over twenty to twenty-five acres a day The idea is that constant cultivation retains mois ture, and enables the roots of the plants to make the most of what rain and dew fall, the “dust blanket’’ forming a mulch for the growing grain. The experiment is being watched with great interest, and is said to have been so far successful. Of all the instruction and advice that has been given of late years in connection with dairying, probably the least attention is paid to the principles that have been laid down regarding cleanliness in the milking operations. 