Spleen slightly Spleen usually little Spleen enlarged, soft, enlarged altered grumous When death is deferred Necrotic, button-like Necrotic ulcers on 1 to 2 weeks, ulcers on cæcum bowels rare necrotic button-like rarely marked ulcers on ilio-cæcal valve, cæcum, colon, or ileum Lobar pneumonia Lobar or lobular Pulmonary and enteric uncommon pneumonia a marked inflammation rare lesion Kills rabbits (5 to 7 Kills rabbits (1 to 12 Kills pigeon (3 to 8 days) and Guinea pigs days), Guinea pigs (1 days), rabbit (4 to 8 (7 to 12 days). to 4 days), pigeon days), Guinea pig Pigeons sicken but (48 hours) resists survive Blood serum of hog cholera patient causes agglutination of bacilli in cultures; (not constant, occurs with other bacilli) _Dry, warm beds_ with plenty of _air_ and _light_ are essential to vigorous health and the usual damp, filthy, dark pens are depressors of the vital forces and virtually invitations to hog cholera as to other diseases. The close packing of swine under manure or under rotten piles of straw where they often suffocate each other is to be carefully guarded against. It is a sufficient commentary on this to say that for every kilogramme of its body weight, the horse consumes daily 13,272 grammes oxygen, the cow, 11,040 grammes, and the pig, 29,698 grammes. This is in perfect keeping with the high normal temperature maintained by the latter animal. In the interest of health the pig requires twice the breathing space for every 100 lbs. of his weight that is demanded by either ox or horse. What violence is done to this demand of nature in the daily treatment of the hog! _Fresh, sound, wholesome food_ is no less a _desideratum_. Yet the omnivorous pig is condemned to become the scavenger for the kitchen, the stable, the feeding pen, the slaughter house, the creamery, the sugar works, the brewery and even the rendering works. Whatever is considered unfit for human use is thrown into a swill barrel, and as this is never emptied it becomes the field of endless decompositions with the production of the most varied toxins, ptomaines and enzymes. Many of these chemical toxic products cause gastro-intestinal inflammation with vomiting, bloody diarrhœa and tenesmus, and derangement of the nervous and other functions as manifested in weakness, staggering, dulness, stupor, etc. Death may follow in a few hours and the cases are set down as acute forms of hog cholera, rather than the simple poisoning that they are. All the same they pave the way for the attack of hog cholera if its germ is present even in a form of little potency. All such foods should, on the contrary, be fed fresh and after boiling.