HOWEVER, It is to be observ’d in this place, that, as the _Distemper_ is not equally violent in _All_, nor always attended by the _same_, or the same number of _Symptoms_; so neither are the FITS equally long or frequent, but invade and seize the PATIENT according to the quick or slow gathering of the _Morbifick Humours_, which are also sooner or later discussed: Which _Humorous Particles_ in our Bodies, like as in intermitting _Fevers_, have their due Times of _Digestion_, _Accumulation_, and _Exaltation_; which _Height_ as soon as they have arrived to, they suddenly, and as it were in a Moment, break out into _Action_: Or else _These Humours_ may lye dormant in the Body, until by some _Procatarctick_, or _External Cause_, they are exagitated, and set at _Work_. NOW this _Agitation_ of HUMOURS depends not only upon the _Course_ of the SUN and MOON, but also sometimes more particularly upon the _Change_ of the AIR, and the _Motion_ of the SEA. As to the _Solar_ and _Lunar Influences_ upon the _Animal Machine_, they are already abundantly set forth[242], wherefore I shall resume Nothing of _them_ in this place: And as to the _Efficiency_ of the AIR, I would observe it to be always most considerable about the _Two Equinoxes_; as at these _Seasons_ the most impetuous _Winds_ and violent _Storms_ happen; and that continually the most severe at _Noon_ and _Midnight_; that is to say, when the SUN is in our _Zenith_, or in the _Nadir_, _viz._ in the _vertical Point_ over our _Heads_, or the quite _opposite_ under[243] our _Feet_. These _Changes_ however come a little before the _Vernal Equinox_, but follow the _Autumnal_; because of the various _Distances_ of the MOON in its _Perigæum_ and _Apogæum_. MOREOVER, at these _Seasons_, and indeed at all Times, the AIR swells or rises highest, at _New_ and _Full_ MOON, from the conjunct Power of both the _Planets_: Hence the diligent _Mariners_ and _Husbandmen_ always observe the _Weather_ to change, and _Winds_ to rise upon these Occasions; and, not only so, but also, a constant and certain RECOURSE of _Winds_ and _Weather_ to happen at certain _Seasons_ of the Year; and _that_ from some certain necessary _Natural Cause_, which always acts in the same manner.