gs and limbs is speedily absorbed, when the actions of the
lacteals of the stomach or intestines are weakened or inverted by the
exhibition of those drugs, which produce nausea, or by violent vomiting, or
violent cathartics.

Hence in diabetes the lacteal system acts strongly, at the same time that
the urinary lymphatics invert their motions, and transmit the chyle into
the bladder; and in diarrhoea from crapula, or too great a quantity of food
and fluid taken at a time, the lacteals act strongly, and absorb chyle or
fluids from the stomach and upper intestines; while the lymphatics of the
lower intestines revert their motions, and transmit this over-repletion
into the lower intestines, and thus produce diarrhoea; which accounts for
the speedy operation of some cathartic drugs, when much fluid is taken
along with them.

4. Other circles of irritative associate motions of great importance are
those of the secerning system; of these are the motions of the larger
congeries of glands, which form the liver, spleen, pancreas, gastric
glands, kidneys, salivary glands, and many others; some of which act by
direct and others by reverse sympathy with each other. Thus when the
gastric glands act most powerfully, as when the stomach is filled with
food, the kidneys act with less energy; as is shewn by the small secretion
of urine for the first hour or two after dinner; which reverse sympathy is
occasioned by the greater expenditure of sensorial power on the gastric
glands, and to the newly absorbed fluids not yet being sufficiently
animalized, or otherwise prepared, to stimulate the secretory vessels of
the kidneys.

But those very extensive glands, which secrete the perspirable matter of
the skin and lungs, with the mucus, which lubricates all the internal cells
and cavities of the body, claim our particular attention. These glands, as
well as all the others, proceed from the capillary vessels, which unite the
arteries with the veins, and are not properly a part of them; the mucous
and perspirative glands, which arise from the cutaneous and pulmonary
capillaries, are associated by direct sympathy; as appears from immersion
in the cold bath, which is therefore attended with a temporary difficult
respiration; while those from the capillaries of the stomach and heart and
arteries are more generally associated by reverse sympathy with those of
the cutaneous capillaries; as appears in fevers with weak pulse and
indigestion, and at th