In the result, the validity of the new clause 37 must, like the greater part of the by-law, rest upon the power to make by-laws for the purpose of regulating traffic and processions, which is conferred by par. xix of sec. 197 (1). In dealing with the question whether it is justified by that power, we should, I think, take into account the situation of the Newmarket saleyards and the other topographical considerations which determine the real operation of the by-law. So considered, the effect of the by-law is to establish a prima facie rule that no cattle shall pass through streets in the City of Melbourne, but, by way of exception to this rule, to allow cattle to be driven at any hours along a very few streets near or connecting with the area where the yards are situated and between midnight and 8 a.m. along a greater, but a very limited, number of streets which either do, or may be supposed to, lead to some place or in some direction, the character of which demands or suggests the need of a relaxation of the prima facie rule. The by-law does not operate to impede the movement of cattle into the municipal saleyards at Newmarket after their discharge from trucks in the adjacent railway yards or their movement from those saleyards after purchase to the City of Melbourne abattoirs for slaughter. But there is much carcase butchering done elsewhere in the metropolis, both for export and for domestic consumption. In Newport and Braybrook are freezing works, and in Richmond, South Melbourne and Preston are abattoirs. In the ordinary course, stock goes by road from the Newmarket saleyards to the suburban abattoirs. Of the stock arriving by rail at the live stock siding at Newmarket, about ten per cent is consigned, not for sale at the municipal saleyards, but for delivery to specific persons. These cattle must go by road. It appears also that stock comes by road to the freezing works from holding paddocks in, or in the vicinity of, Melbourne, and to do so must travel by road within the boundaries of the municipality. The restriction of hours and routes imposed by the present clause 37 of the by-law makes it very difficult, if not impossible, to move cattle in this way without infringing its provisions. It is true that the railway yards at the Newmarket live stock siding are open for the receipt and delivery of stock at all times throughout the week, except between the hours of 11 a.m. on Sunday and 7 a.m. next morning, and that stock may be taken from the saleyards from 6 p.m. onwards every night. But neither Railways Commissioners nor consignees can allow stock delivered from trucks to remain long in the yards. The Commissioners need the space, and the consignees are under the practical necessity of feeding, watering and caring for stock which have undergone transportation in railway trucks. Cattle and sheep trains appear to arrive for the most part between 8 p.m. and 7 a.m., except on Mondays, when they arrive from 11 a.m. onwards. If stock are held in paddocks in or in the neighbourhood of Melbourne, they are mustered and counted before delivery out of the paddocks, and this must be done in daylight. Sheep and lambs for slaughter are not driven more than a mile and a half an hour, and cannot be slaughtered while heated. A special stock route, which is not a public highway, but, in fact, may be used at any time, has been made by the municipality from the saleyards to an outlet by way of Lynch's bridge into Newport. Otherwise cattle and sheep must go by the public thoroughfares. It is said that compliance with the by-law has been found impossible and that in general no attempt is made to enforce it. On the part of the municipality, any general failure to enforce the by-law is denied, but it is stated that an endeavour is made to administer it "reasonably and sympathetically," to consider the facts of each case carefully before prosecuting, and to proceed against those only who disregard a warning or show no consideration for the comfort or rights of the public. It is admitted that the practice exists of driving sheep from the saleyards from 6 p.m.