PART IV. 
THH HOG AND HIS DISEASES. 
GENERAL REMARKS. 
Woin7 HE observations upon Anatomy and Physiology which are made 
2 on page 41 apply with sufficient precision to the hog to make 
unnecessary a separate treatise thereon. The varied food of this 
animal points to a similarity of functions as compared with those 
of man, and all practical hints for a work of this kind will be gleaned from 
what has been laid down in the several chapters of Part I. Before ad- 
vancing to the treatment of diseases, however, notes are in order upon a 
few popular errors of practice in the care of swine. 
In the first place, it is generally assumed that the hog is by nature 
prone to habits of filth. He is naturally disposed to wallow in water or 
other fluid elements, but will choose that which is clean if he has an oppor- 
tunity. If he has not, he will take to what is afforded him, however filthy 
it be. It is only a disregard of his natural fondness for wallowing that 
leads him to take to offensive mire. A little observation will convince 
one that this animal is disposed to be cleanly. He will keep his sleeping- 
apartments clean and dry and will generally deposit the manure in a place 
apart from the bed, feed and drink, If one would have cleanly and healthy 
swine, the sty should be so arranged as to permit them to follow such 
promptings of their nature—a practice which is far from common. 
In the second place, swine are not sufficiently protected from the 
weather. They are proverbial prognosticators of the weather, as shown 
by their preparation of beds before an approaching cold spell; and they 
are also sensitive to extremes of heat and cold. Their squealing in cold 
weather is more marked than the noise made by any other of the domestic 
animals in the winter; they will huddle together more closely to preserve 
warmth than others will; and they will with equal persistence seek damp 
and shady places in summer. These indicate that the hog is much more 
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