This condition, which refers to a diminution in the size of the organ owing to wasting of the muscular tissue and a general failure of its contractile power, is much less common than the enlarged state, hypertrophy and dilatation. The characteristic symptoms are those which would be expected from the anatomical changes. The circulation becomes extremely feeble, the pulse is small and weak, and general failure of the supply of blood to the whole of the system leads to passive congestions in different organs and rapid emaciation, which would terminate fatally if the end were not anticipated, as it usually would be, by slaughtering the animal.