=Sewage.=--The question of sewage disposal from a packing house is of more consequence than the water supply, which is usually determined by the relative cost. The former is a matter of disposition. No matter how carefully the refuse from the slaughtered animal is collected for passing through the rendering department, or how carefully the waters from cooking are collected for evaporation, quite large quantities of nitrogenous particles and many substances which are more cheaply disposed of by the way of the sewers, ultimately reach them. If the refuse finds its way to a rapidly flowing stream, it is taken care of by bacterial action, but if discharged into a dry stream or pool, or to a sewage disposal plant, it becomes a serious burden that sooner or later reverts to the packer. =Odors and Prevailing Winds.=--Naturally to minimize the distance of transport to stations for shipping or delivery to the consumer, or to be near to a supply of labor, every manufacturer is desirous of locating his works near to a city or on its outskirts, if not at a commercial stock yards. Where the latter are of comparatively large consequence to a community, the odors arising are usually considered a “necessary evil” and the packing plant as a part of that. No matter how carefully the plant may be operated, if the full commercial value is taken out of all products there are some departments in which it is difficult to abate the smells, and if the prevailing winds are towards a residence district, it is likely to cause disturbance. This statement can be qualified, however, because it is a fact that plants can be designed and can be operated so as to be kept within proper bounds and be of no more nuisance than the handling of the live animals, but it will always be well for the prospective packer to recognize that he would not care to live on the premises, nor will his neighbor appreciate his works any more than he. A packing house properly belongs to a district at a reasonable distance from residence property, and where the prevailing winds are not toward the residence district. =Cleanliness.=--The features contributing most to the operation of a plant so as to avoid it becoming noisome is that of cleanliness, first, last and always; ample equipment to promptly dispose of all by-products, and to do it promptly.