I will add to what hath been said, one experiment more, that is very material: And that is, being very hypochondriacal, and of a melancholy temper, I have often been strangely dejected in mind when under grief for some misfortunes, which sometimes have been so great, as to threaten danger to life; in which fits of grief I always found the parts within my breast very uneasy, and sometimes continued long: But now I have found a good remedy; for, upon drinking a pint or more of cold water, I find ease in two or three minutes, so that no grief seems to afflict. Which experience I discover for the sake of others in the same circumstances, being certain, that the stomach sympathizeth with the mind, and this becomes the cause of that uneasy sensation perceived there, for which, cold water I have found to be the best remedy in myself, and I believe others may find the same benefit, who wilt make use thereof upon the like occasion. And it gives also relief to people under frights, which sometimes have been very fatal, even unto death. [Sidenote: _Vapours._] There is also another experiment that I have often seen of good effect; and that is, that if persons, subject to what is called vapours, or that are afflicted with fits, commonly called _the fits of the mother_, will but drink water when they find their fits approach, it will immediately yield relief. There is in this case a mealy julep, prescribed by Dr. Bates, which is, to take a spoonful of fine wheat-flour, an ounce of fine sugar, and a pint of water, brew them together, and drink it off: This is pleasanter than water alone; but water of itself will be as effectual, or rather better, as hath been often proved upon persons in those fits. [Sidenote: _How to distinguish Water._] Some perhaps may desire to know how to distinguish good from bad water. And the way to do this is, by the taste and scent; for being purely fresh, not salt, nor sweetish, nor ill-scented, it is good, provided it be pure and clear: Of which kind is the common water used in London, when well settled, or in fair weather. As for those who are curious, and will be at the charge, they may procure the best water for drink by distillation, either in an alembick, or in a cold still used in drawing any cold water from herbs; for no earthly or metallic substance, nor any kind of salt will rise in distillation: So that the water so distilled will be pure, and admirable to drink when cold, and will keep as long from stinking as any of the cold distilled water in the apothecaries shops; according to what Dr. Quincy hath affirmed about it in his _Dispensatory_.