ts remission early in the morning, with sweats, or
diarrhoea, or urine with white sediment.

3. The periods of quotidian fever are either catenated with solar time, and
return at the intervals of twenty-four hours; or with lunar time, recurring
at the intervals of about twenty-five hours. There is great use in knowing
with what circumstances the periodical return or new morbid motions are
conjoined, as the most effectual times of exhibiting the proper medicines
are thus determined. So if the torpor, which ushers in an ague fit, is
catenated with the lunar day: it is known, when the bark or opium must be
given, so as to exert its principal effect about the time of the expected
return. Solid opium should be given about an hour before the expected cold
fit; liquid opium and wine about half an hour; the bark repeatedly for six
or eight hours previous to the expected return.

4. The periods of tertian fevers, reckoned from the commencement of one
cold fit to the commencement of the next cold fit, recur with solar
intervals of forty-eight hours, or with lunar ones of about fifty hours.
When these of recurrence begin one or two hours earlier than the solar
period, it shews, that the torpor or cold fit is produced by less external
influence; and therefore that it is more liable to degenerate into a fever
with only remissions; so when menstruation recurs sooner than the period of
lunation, it shews a tendency of the habit to torpor of inirritability.

5. The periods of quartan fevers return at solar intervals of seventy-two
hours, or at lunar ones of about seventy-four hours and an half. This kind
of ague appears most in moist cold autumns, and in cold countries replete
with marshes. It is attended with greater debility, and its cold access
more difficult to prevent. For where there is previously a deficiency of
sensorial power, the constitution is liable to run into greater torpor from
any further diminution of it; two ounces of bark and some steel should be
given on the day before the return of the cold paroxysm, and a pint of wine
by degrees a few hours before its return, and thirty drops of laudanum one
hour before the expected cold fit.

6. The periods of the gout generally commence about an hour before
sun-rise, which is usually the coldest part of the twenty-four hours. The
greater periods of the gout seem also to observe the solar influence,
returning about the same season of the year.

7. The periods of the pleurisy