But while there are differences of opinion in the matter of breeds for crossing purposes, it is clear that this subject has never been exhaustively determined. For example, while there are advocates for the maintenance of pure strains, and the crossing of the Tamworth with both the black and white pigs, the large white Yorkshire is practically an unknown quantity. Both in Great Britain and in Denmark this breed has done more to establish the bacon industry than any other breed. Its value is indorsed by experience at Dookie College, where the only pure strain of the breed in Victoria is located. The Berkshire sow used with the large white boar produces a shapely offspring, which takes on the short snout of the sow with the pure white colouring of the boar. The cross is a longer pig than the Berkshire, cleaner in the shoulder, but with much the same conformation elsewhere. A common plan is to use all the longest and deepest sows of the first cross for breeding baconers. The pure large Yorkshire is not as economical as the Berkshire if growing pigs for the pork trade, as it takes longer to mature. The sows, however, average about ten to the litter, and some have fifteen or sixteen. Only the fine-haired ones seem to scald, otherwise they stand the sun as well as the Berks. They are good doers under a wide range of conditions, prolific, vigorous, and more likely to do well under the rough circumstances to which they are accustomed on most farms than the more delicate Berkshires. When sold at the same time as other breeds and crosses, they always top the market; and a half-truck realised over $20.00 per head when sold in Melbourne under six months old. So far as Australian experience has gone there is everything to indicate that pig raising, while an extremely profitable occupation, has not yet attained the results which may be expected to follow as more attention is given to the choice of breeds, the selection of the hogs, and fecundity on the part of the sow. These are all matters which from the ordinary farming standpoint have never been gone into thoroughly. That pig raising will pay and does yield handsome returns is admitted, yet when so many avenues of improvement are open, it cannot be said that the industry is receiving the attention it deserves. Up to the present farmers and dairymen have been chiefly concerned with raising the pigs, disposing of them perhaps at two months, or, as more often is the case, of keeping them on till four months, when they are topped off and sent to market to bring what can be realised. Many send away their pigs too fat, and few engaged in the general branches of agriculture really give the animals full attention over the growing period. [Illustration: Dam, Western Australia.]