Theses de febre hectica

...natural [things], and non-natural [things].

XVI.
Signs of the present are the causes already set forth, or those things which fall under the senses: namely, damaged action, excreta, and changed quality.

XVII.
By damaged action, I understand the animal, the vital, and the natural [functions].

XVIII.
To the animal [function] it pertains not to be able to close the eyes or even to blink them, but without sleep. Not to feel the feverish heat except after food is taken. To feel numbness and sluggishness of the whole body on account of the weakness of the faculties.

XIX.
Damaged vital [function] is denoted by pulses that are weak, small, frequent, empty, hard, always behaving in the same way, except that they become more vehement two hours after food.

XX.
To the affection of the natural [functions] pertains thirst and a prostrate appetite.

XXI.
Signs of the Hectic are taken from the excreta, both specifically—those contracted by the defect of a certain part—and generally.

XXII.
For in that [fever] which began from a defect of the lung, the sputa are most to be weighed; those of the stomach [are judged by] feces, those of the liver by urine.