.

[12] Further information on fly repellents may be found in Bulletin 131 of
the Department of Agriculture.

[13] For further information consult Farmers' Bulletin 1097.

[14] For further information consult Circular 115 of the Bureau of
Entomology.

[15] For further information consult Farmers' Bulletin 857.

[16] For further information see Farmers' Bulletin 909.

[17] For a fuller discussion see Farmers' Bulletin 1017, issued by the U.S.
Department of Agriculture.

[18] For a more complete discussion consult Farmers' Bulletin 1057,
Bulletins 130 and 152 of the Bureau of Animal Industry, and Bulletins 15
(technical series), 72, and 106 of the Bureau of Entomology, all issued by
the United States Department of Agriculture.

[19] For further information consult Bureau of Animal Industry Circular
214.

MYCOTIC STOMATITIS OF CATTLE.

By JOHN R. MOHLER, V. M. D.,

_Chief, Bureau of Animal Industry._

INTRODUCTION.

Numerous letters have been received by this bureau in recent years relative
to the existence of a disease affecting the mouths and feet of cattle in
certain Eastern and Central Western States. Later reports indicate that the
malady has made its appearance in the Southwest, where it has caused much
alarm among the stockmen owing to its similarity to the foot-and-mouth
disease of Europe. The disease, which is to be discussed under the name of
mycotic stomatitis, has been carefully investigated by this department on
various occasions, and it is with the view of giving the results of these
clinical investigations as well as to assert its noninfectiousness and to
differentiate it from the virulent foot-and-mouth disease, which it so
closely simulates, that this article is prepared.

NAME AND SYNONYMS.

The name stomatitis signifies that there is present in the affected animals
an inflammation of the mucous membrane of the mouth. This inflammation,
which quickly develops into ulcers, is one of the principal and most
frequently observed lesions. Mycotic stomatitis refers to that form of
stomatitis which results from eating food containing irritant fungi. Thus
the name not only suggests the cause of the disease, but also indicates the
location of the earliest and most prominent symptoms. Other names which
have been applied to this disease by different writers are sporadic aphthae;
aphthous stomatitis; sore mouth of cattle; sore tongue; benign, simple, or
noninfectious foot-and-mouth disease