Show DRAFT CAUSE OF PNEUMONIA Just as Essential to Have Hog House Houses Well Ventilated as to Avoid Closing Tight Drafty hog houses are fr frequently the cause of pneumonia but It is Just as I essential to keep hog houses well ventilated ventilated ventilated venti venti- as ns It Is to avoid closing the house up tight If tho the hogs hog are shut up In Ina Ina ina a warm wann building where whre the they become too warm and then subjected to cold drafts they are very lIkel likely to contract contract contract con con- tract pneumonia |