Under the title of " Specific " Ailments, the author deems it advisable to give a brief account of such diseases as distemper, blood-poisoning, rabies or madness, rheumatism, kennel lameness, or chest founder, these complaints having as their cause germs, or micro-organisms; the production of these ailments —in three of them at least—being due to the entrance of minute organisms into the system, the excretions, or poisonous products resulting in the several forms of disease, as named above.