ONE animal is man's best friend; the other a selfish, disdainful boarder; the third a plodding, faithful worker, now the pawn of racing; still another a glutton destined for sacrifice. All four— the dog, cat, horse, and pig—are featured in the study of emphysema, a natural consequence in the search for precise and objective scientific data. But why should attention be drawn to a few domestic animals? Is it not possible for the barnyard and jungle to yield more suitable specimens? How about the cow, the goat, and the lamb? Who will venture into the wilds of South Africa to ingratiate the tiger or beard the lion in his den?
The time is ripe for the use of surgical and physiologic technics in experimental emphysema. However, there is a stumbling block, since the search for animals with lungs anatomically similar to those of man and with tendencies to develop emphysema