Seâ:. 14.

607. Urina Vaccje, C<¡.s>VTifs. Some drink this as a Purge.It will operate violently : but it isprailis'd only amonglt the ordinaryPeople, and has nothing in its Vir-tues to prefer it to more convenientand cleanly Medicines, any morethan the former.

Of Waters. 24$

608. Tribuli Aqjo atici ,Water-Caltrop!, diftinguifhed by Pur-kinfin • Aquaticus major. Ic

grows in watry Places, and Bowersin June ¡ but at preftnt is an utterStranger to Pharmacy, altho re-ceived into the new Catalogue ofthe College.

SECT. XIV.Of Waters.

m

WATER is fo ufefiil andneceffary a Part of all thatwe are conce^n'd in, with regardeither to Diet or Medicine, that wecannot be too inquiiitive into itsNature and Difference ; nor tooibllicitous and nice in our Choice ofit." It is the main Diiuter of ourFood, and i: the beft for that pur-poiè, the freer it is from the Mix-ture of any foreign Particles. Bythis Element, or Divifion of Matter,we underftand nothing but a fimpleunmix'd Fluid ; and Water, as fuch,is not manageable by Pharmacy toalter it for the better. But as it isnot to be met with unmix'd withlome heterogeneous Particles, we(hall be better init.ruct.ed how toufé and chulé it for the Purpofes ofLife, by inquiring how it is alter'dand affected by the Mixtures it re-ceives of fuch foreign Matter , inthe feveral Conditions we meetwith it.

In this Search wt find again thebeft Helps' from fome fhort Hints( and fuch only we have room for )of Dr. Mead's, in his laft EJfay onPoifins.

Water is of ib confiant a fervice,not only tor our Drinks, but alio

in preparing our Flefh and Bread,that it may juftly be faid to be theVehicle of all our Nourifhment :fo that whenever this happens toput on other Properties than areneceffary to fit it for this purpofe,it is no wonder if in its Paflâgethro the Body theiè do make fuita-ble Imprefiions there. Thus at Pa-ris, where the Water of the RiverSeine is fo full of (tony Corpufcles,that even the Pipes thro which it iscarried, in time are incrufted andftopt up by them ; the Inhabitantsare more fubjedt to the Stone in theBladder than in moil other Cities.The fame has been oblerv'd in theBaths of Abano, a few Miles fromPadua, to that degree that it is fre-quently neceflàry to clear the Wheelof a Mill driven by the Current ofthofe Springs, from the great quan-tity of petrify" d Matter, with whichit is from time to time incumber'd .Naturalifts give us many Hiiloriesof fuch Waters, and one Inilance Ihave my felf feen in Northampton-ßnre, in the Pariili of Rothrpell orRowell, of the fame kind the Doctormentions near Padua. It is whitthe Country People there call anOver foot ■ Mill, where the Water

turns

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