time of the yeare, nature and age of the sick do shew; for if the disease be very acute ariseing from thin and acrid matter, and the crisis be to come after, the first periods, if nature be strong, the pulse high, the passages open, and nature accusto∣med to sweate or some other evacuation, if it be Summer time, tis a signe that there will be a crisis by excrements.
But on the contrary if the disease be not so acute and the matter be thick, nature weaker, especially if the urines come forth thin and crude for a long space, if their be debility of the externall parts, and propensity of nature to thrust out hu∣mours, to these places; if the time of the year be cold, tis a token that there will be a crisis occasioned by imposthuma∣tion.
And indeed excretions are good when they are evacuated as they ought, and such as ought,
and in such manner as they ought, and when, and as much as is expedient; namely when the humour which offendeth is evacuated, and concocted in due quantiry, in a criticall day, in a right manner, together, and through places sending them out together; evill evacua∣tions are contrary.
Good imposthumations are those which are made when the matter is concocted, have laudable substance,
namely a figure swelling externally, and sharpned, do equally ripen, and are not hard round about, and are of a good colour, red, yel∣low, or white, indifferent bignesse, when they continue and go not away untill they are suppurated, and are soon ripened; on the contrary, ill imposthumations swell not enough with∣out, and are not pointed, they suppurate not all alike, they are hard about, and cloven into two, their colour inclining to red, yellow, or black, they are greater then is convenient, and they vanish before they are suppurated, or are ripened very slowly.