onclude, that these fluids pass into
the bladder by the urinary branch of the lymphatics, which has its motions
inverted during the diseased state of the animal.

A gentleman, who had been some weeks affected with jaundice, and whose
urine was in consequence of a very deep yellow, took some cold small punch,
in which was dissolved about a dram of nitre; he then took repeated
draughts of the punch, and kept himself in a cool room, till on the
approach of slight intoxication he made a large quantity of water; this
water had a slight yellow tinge, as might be expected from a small
admixture of bile secreted from the kidneys; but if the whole of it had
passed through the sanguiferous vessels, which were now replete with bile
(his whole skin being as yellow as gold) would not this urine also, as well
as that he had made for weeks before, have been of a deep yellow? Paper
dipped in this water, and dryed, and ignited, shewed evident marks of the
presence of nitre, when the flame was blown out.

IV. _The Phaenomena of the Diabetes explained, and of some Diarrhoeas._

The phenomena of many diseases are only explicable from the retrograde
motions of some of the branches of the lymphatic system; as the great and
immediate flow of pale urine in the beginning of drunkenness; in hysteric
paroxysms; from being exposed to cold air; or to the influence of fear or
anxiety.

Before we endeavour to illustrate this doctrine, by describing the
phaenomena of these diseases, we must premise one circumstance; that all the
branches of the lymphatic system have a certain sympathy with each other,
insomuch that when one branch is stimulated into unusual kinds or
quantities of motion, some other branch has its motions either increased,
or decreased, or inverted at the same time. This kind of sympathy can only
be proved by the concurrent testimony of numerous facts, which will be
related in the course of the work. I shall only add here, that it is
probable, that this sympathy does not depend on any communication of
nervous filaments, but on habit; owing to the various branches of this
system having frequently been stimulated into action at the same time.

There are a thousand instances of involuntary motions associated in this
manner; as in the act of vomiting, while the motions of the stomach and
oesophagus are inverted, the pulsations of the arterial system by a certain
sympathy become weaker; and when the bowels or kidneys are stimulated by
p