It is not in most things the bare and naked knowledge or contemplation of them, that makes them profitable to us; but rather their right use, and oppertune and fit administration. Medicines are not said to be _Deorum manus_, that is, the hands of the Gods, (as _Herophilus_ calleth them) or _Deorum dona_; that is, the gifts of the Gods (as _Hippocrates_ beleeved) till they be fitly applyed and seasonably administered by the counsell and advice of the learned and skilfull Physitian, according to the true rules, and method of Art. _Temporibus medicina valet, data tempore prosunt, Et data non apto tempore vina nocent._ That is, Medicines availe in their due times, And profit is got by drinking wines In timely sort; but in all reason They doe offend, drunke out of season. Therefore to know th' originall mineralls, faculties, and vertues of this worthy acide fountaine, will bee to no end, or to small purpose for them, who understand not the right and true use, nor the fit and orderly administration of it. For not only Physicke or medicines, but also meats, and drinks taken disorderly, out of due time and without measure, bringeth oftentimes detriment to the partie; who otherwise might receive comfort and strength thereby: So likewise this water, if it be not drunke at a convenient time and season, in due fashion and proportion, yea, and that after preparatives and requisite purging and evacuation of the body, may easily hurt those, whose infirmities otherwise it doth principally respect. For medicines ought not to be taken rashly, and unadvisably, as most doe hand over head without any consideration of time, place, and other circumstances; as that ignorant man did, who getting the recipt of that medicine, wherewith formerly he had been cured, made triall of it againe long after for the same infirmity without any helpe or good at all, whereat greatly marvailing, received this answer fro his Physitian: I confesse (said hee) it was the selfe same medicine, but because I did not give it, therefore it did you no good. To the end therefore, that no occasion may hereafter be either given, or taken by the misgovernment, or overrashnesse of any in using it to calumniate and traduce the worth, and goodnesse of this fountaine, I will briefly here shew, what course is chiefly to be followed and observed by those who shall stand in need of it.