The new dispensatory: containing, I. The elements of pharmacy. II. The materia medica ... III. The preparations and compositions of the new London and Edinburgh pharmacopoeias / [William Lewis].

  • Lewis, William, 1708-1781
Date:
1785
Catalogue details

Licence: Public Domain Mark

Credit: The new dispensatory: containing, I. The elements of pharmacy. II. The materia medica ... III. The preparations and compositions of the new London and Edinburgh pharmacopoeias / [William Lewis]. Source: Wellcome Collection.

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    33 oppofite to the canal or flew or a number of openings according to the fize of the furnace and the degree of heat required, for fupjfly- xng air, wh.ch is more conveniently admitted in this manner than up °b%:h2r’ the *nterft>ces of the grate ate This furnace is deflgned only for heating bodies exterior to it Its canal or ft™, as in the fand furnace already defcribed pafTes under a land-bath or water-bath ; at the further end of which it ■> ■ mO, flew and the furnace, enables us to increafe or diminifh this height and conlequently the quantity of fire, at pleafure. If the fnace^e! neath the flew be inclofed to the ground, the heat in this cavity will be confiderableenough to be applicable to fome ufeful purpofes}. With regard to the materials of furnaces, the fixt ones are built O bnclcs, cemented together by fomegood lo’am or clay Any kind oMoam or clayey compofition that is of a proper degree of tenacity h/ft1’ ™hen.made int0 a Pafte with water and well worked does not flick to the fihgers, and which, when thoroughly dried neither cracks nor melts in a vehement fire, is fit for this Jfe : the pJrer Li aTmixtureaCof ^ thdr tenacity Je<^ned b/ and powdered ’ ^ ^ ^ kind °fda7 •»«* Smaller portable furnaces are made of ftrong iron or Conner elites lmed to the th.cknefs of an inch or more with the fSnd 6f clayey compofition t which, for this ufe, may be beate with fome horfe-dung, chopt draw, or cut hair or tow. *7 com'°^°us portable furnaces, for a bullnefs of moderate extent, may be formed alfo of the larger kind of the common black hae afo ni;’8 P°‘V at the bottom of ?he pot for he afh-pit, another above this for the fire-place, and introducing t Jo'l U ^ lrr°^ SratC’ *?f fuCh 3 flZe’ that ic maV reft between the Cnlesfm d /artlC r r *CCOU,mf the >«bod of preparing thefe mercimn PhilLrT ?*? be in the firft P«‘ of the Com- xnercium rhilofophico-technicum.] , Baths. 1 meuls'&c thfve^l degree °f hS,at ’-S reqt,lfite= a§ in the ^ the bu C°ntare,the fubje*~ is placed among in a naked fire Wh’mm rlati 7 T “ : thi$ is called °Peratini employed is either -.f i ^.fmallefr heat is fufficicnt, and the veffcl ware, the land hath g ?r the more tender kincis of earthen ; i<Uld*bath water-bath is ufed, to defend the Veffel from D the