24-8

The Materia Medica.

Part II.

other. The acid of thefe felts hasthe greatefl affinity with zinc, nextto this with iron, and with copperthe leaft of all. Hence, folutionsof white vitriol depofite, on ftand-ing, gr.eiteft part of the irony andcupreous matter, which they con-tain, and'if fome frefli zinc beadded, the whole : in like man-ner, upon adding bright polifhediron to folutions of green vitriol, ifit holds any cupreous matter, thiswill be thrown down. By thisipcans the white and green vitriolsmay be purified from other metal-lic bodies.

ULMARI^E, feu Reginre pratifolia, flores : Uhnarirz barbc? cvprijioribus compaQis C. B, Meadow-fweet, or queen of the meadows;the leaves and flowers [£.]

This herb is frequent in moiftmeadows, and about the fides ofrivers; it flowers in the beginningof June, and continues in flower aconliderable time. The flowershave a very pleafant flavour, whichwater extratts from them by infu-iion, and elevates in diftillation.The leaves are herbaceous.

URTICiE MAJORIS VUL-GARIS folia, femen: Urt 'ua racemferrsmajorisperennis Raii. Sting-ing nettle ; the leaves and feeds[£.]

URTIC/E ROMANCE foliafet.r tt: Urtica; urentis pilulas feren-tis jcmine lini C. II. Roman nettle jthe leaves and feeds.

Thefe have had fundry virtuesattributed to them, which the pre-fent pradtice pays no regard to.The young leaves of the firft fortare by fome ufed in the fpring as awholefome pot herb.

UV t E PASSES [£•] majores[£.] Raifinsof thefun ; the driedgrapes of the <vitis Danafcena,

UViE PASSiE minores [£.]Currants; the cncd grapes 01 the•V it is Corinthiaca.

The principal ufe of thefe is asan agreeable fweet; they imparta very pleafant flavour both toaqueous and fpiriruous menilrua.The feeds or ftones are fuppofed togive a difagreeable relifli, andher.ce are generally direfted to betaken out; ntvei thelefs 1 have notfound that they give any taftp atall. The rjiilins of the fun are aningredient in the pefioral decoc-tion, tinfture of fena, and fto-niachic ti-n&gre [£.]

WINTERANUS CORTEX[£.] Winter's bark; the produce ofa tree growing in Jamaica, Barba-does, &c. called by Sir HansSloanepericlymenum reilum, fol;is Iflurinis,cortice acri aromatico. It was firftdilcovered on the coaft of Magel-lan, by Capt. Winter, in the year1567: the failors then employedthe bark as a fpice, and afterwardsfound it ferviceable in the fcurvyjfor which purpofe it is, at prefencalfo, fometimesmade ufeof m diet-drjnks. The true Winter's bark isnot often met with in the fhops,canella alba being generally fub-ilituted to it, and by many reck-oned to be the fame: there is ne-verthelefs a confiderable differencebetwixt them in appearance, and agreater in quality: the Winter'sbark is in larger pieces, of a morecinnamon-colour, than the ca-iiella; and taftes much warmerand more pungent.

ZEDOARIA [£.£.] Zetjoary ;the root of an Indian plant, broughtoyer in oblong pieces about thethicknefsof the finger, orinround-ifh ones aboutan inch in diameter.Both forts have an agreeable fra-grant fmell, and a warm, bit-,terifti aromatic taftt.

In