Hering records a case of _spasmodic asthma_, in a strong cart horse.
Besides the oppressed and difficult respiration, the animal was
excessively dull and had no appetite, but the pulse was almost of the
natural standard. The animal was not benefited by opening medicine but
improved under active doses of extract of hyoscyamus. Quillaume reports
two asses attacked apparently in the same way, and Delwart and Robertson
refer to other cases. They recovered under antispasmodics. These are at
least closely related to heaves, which is largely a neurosis at first.