With regard to other causes I know

With regard to other causes I know

With regard to other causes I know

With regard to other causes, I know of none. I have not been able to observe that any circumstance can induce the disease, though at particular ages the animals are predisposed to its exhibition.

During the latter period of dentition that is, when the second set of incisors are well up, and the permanent tusks are about half-grown, the temporary ones being still retained is the time when pups are most disposed to display this disorder. I cannot state the precise age, because mouths are not regular in their appearances even as to mouths; but the aspect of the teeth will sufficiently mark the period when an individual may be expected to be attacked. The season certainly, in no little degree, influences the disease. In winter it is not usually seen; in the spring it is more common; in summer is rare, but less so than in winter. During the autumn, however, especially if much rain should fall, it is very frequent, and always more prevalent than at any other periods. Spring and autumn, therefore, are the times when it is to be looked for, but in the latter it is to be anticipated.