_Tubercles_ in the spleen are common in cattle, swine, guinea-pigs,
rabbits and cats, in the last largely as the result of ingestion of
tuberculous meat. In the larger mammals individual tubercles are usually
of the size of a walnut and upward, while in the smaller they show as
miliary deposits. The products are often caseated or calcified.
_Glander nodules_ are found in the spleen of the horse and other
solipeds and as the result of inoculation in that of rabbits and
guinea-pigs. In solipeds they may be of considerable size whereas in the
inoculated rodents they are usually small and numerous—like millet seed
or pins’ heads.