an usual.

11. The other intestines are by association excited into more powerful
action, while the lymphatics, that open their mouths into them, suffer an
inversion of their motions corresponding with the lymphatics of the
stomach, and duodenum; which with a part of the abundant secretion of bile
is carried downwards, and contributes both to stimulate the bowels, and to
increase the quantity of the evacuations. This inversion of the motion of
the lymphatics appears from the quantity of chyle, which comes away by
stools; which is otherwise absorbed as soon as produced, and by the immense
quantity of thin fluid, which is evacuated along with it.

12. But if the stimulus, which inverts the stomach, be still more powerful,
or more permanent, it sometimes happens, that the motions of the biliary
glands, and of their excretory ducts, are at the same time inverted, and
regurgitate their contained bile into the blood-vessels, as appears by the
yellow colour of the skin, and of the urine; and it is probable the
pancreatic secretion may suffer an inversion at the same time, though we
have yet no mark by which this can be ascertained.

13. Mr. ---- eat two putrid pigeons out of a cold pigeon-pye, and drank
about a pint of beer and ale along with them, and immediately rode about
five miles. He was then seized with vomiting, which was after a few periods
succeeded by purging; these continued alternately for two hours; and the
purging continued by intervals for six or eight hours longer. During this
time he could not force himself to drink more than one pint in the whole;
this great inability to drink was owing to the nausea, or inverted motions
of the stomach, which the voluntary exertion of swallowing could seldom and
with difficulty overcome; yet he discharged in the whole at least six
quarts; whence came this quantity of liquid? First, the contents of the
stomach were emitted, then of the duodenum, gall-bladder, and pancreas, by
vomiting. After this the contents of the lower bowels, then the chyle, that
was in the lacteal vessels, and in the receptacle of chyle, was
regurgitated into the intestines by a retrograde motion of these vessels.
And afterwards the mucus deposited in the cellular membrane, and on the
surface of all the other membranes, seems to have been absorbed; and with
the fluid absorbed from the air to have been carried up their respective
lymphatic branches by the increased energy of their natural motions, and
do