tastes or odours in the other. This accords with the laws of
causation, Sect. IV. 5.

17. _Pulsus mollis in vomitione._ The softness of the pulse in the act of
vomiting is caused by direct association between the heart and the stomach;
as explained in Sect. XXV. 17. A great slowness of the pulsation of the
heart sometimes attends sickness, and even with intermissions of it, as in
the exhibition of too great a dose of digitalis.

18. _Pulsus intermittens a ventriculo._ When the pulse first begins to
intermit, it is common for the patient to bring up a little air from his
stomach; which if he accomplishes before the intermission occurs, always
prevents it; whence that this debility of the heart is owing to the direct
association of its motions with those of the stomach is well evinced. See
Sect. XXV. 17.

I this morning saw Mr. ----, who has long had at times an unequal pulse,
with indigestion and flatulency, and occasional asthma; he was seized two
days ago with diarrhoea, and this morning with sickness, and his pulse was
every way unequal. After an emetic his pulse still continued very
intermittent and unequal. He then took some breakfast of toast and butter,
and tea, and to my great surprise his pulse became immediately perfectly
regular, about 100 in a minute, and not weak, by this stimulus on his
stomach.

A person, who for many years had had a frequent intermission of his pulse,
and occasional palpitation of his heart, was relieved from them both for a
time by taking about four drops of a saturated solution of arsenic three or
four times a day for three or four days. As this intermission of the pulse
is occasioned by the direct association of the motions of the heart with
those of the stomach, the indication of cure must be to strengthen the
action of the stomach by the bark. Spice. Moderate quantities of wine. A
blister. Half a grain of opium twice a day. Solution of arsenic?

19. _Febris inirritativa._ Inirritative fever described in Class I. 2. 1.
1. belongs to this place, as it consists of disordered trains and tribes of
associated irritative motions, with lessened actions of the associated
organs. In this fever the pulsations of the heart and arteries are weakened
or lessened, not only in the cold paroxysm, as in the irritative fever, but
also in the hot paroxysm. The capillary arteries or glands have their
actions nevertheless increased after the first cold fit, as appears by the
greater production of heat