장음표시 사용
41쪽
Arabic to the sanae ingredients as in Experiment Ι. and kund, that, by means os a sonae what longer agitation, the like Union was ob tained ; and this Was also more lasting. Os theseverat olis made use of in the experiment, Ithinh the oti os almonds unites the most speedily, and remains united in the sorm os an emulsion, much longer than any of the others. Ex PERIMENT VI. To one drachm os symple syrup, and onedrachm of the mucilage, I put hals an ounce of olive-oil, two drachms of proos spirit, and oneounce of water. These, by a mort agitation, produced a very Unisorio emulsion, and retainest this appe arance severat minutes. Ex PERIMEN Υ VII. The fame ingredients Without the syrup, in the fame proportions, shook together an equalti me, did not afford so equabie a mixture, and a separation 1 oner ens haed. EXPERIMENT VIII. To one drachm of Oil of almonds, I piat two drachms of honey, and One OUnce of Water.
42쪽
One scrupte of the poWder of gum Arabic, with one drachm of balsam. Perre . capisi, and balsam. guaiac. tWo drachms of proos spirit, and one ounce of Water, Unite eastly by agi tation. The balsam guaiac. by this means aD fords a mixture of a fine blue colour, lastinglyunis orna ; with the balsam. Perv. it did not longcontinue mixed, tho' on aking, it re- assumeda good apPearan Ce. EXPERIMENT XLI o one drachm of bal m. capizi, Was putone drachm of the mucilage of gum Arabic, and one ounce of Water. These, by agitation, presently formed a neat sinooth draught, tho
the paris separated a litile Upon standing. Raeperiments on mixtu Oiis, tac. 0 Attrition. EXPERIMENT XII. To one drachm of the mucit age of gum Arabic, Ι put two drachms of Olive-oil, and oneounce of Water. These, by moderate attrition
43쪽
in a mortar, formed a neat emulsion, and conti
EXPERIMENT XIII. Oil of almonds and linseed, in the sanae proportions, trealed as in the former experiment, made as persedi an emulsion, and kept united in the fame manner. EXPERIMENT XIV
I varied the proportions of mucilage and oti, but found the mucilage would not keep morethan double iis quantity of Oil, united withWater, any considerable time Ex PERIMENT XV. A drachm of mucit age, and a drachm os balsam. capivi, being first weli rubbed together, and an ounce of mater added, formed an homogeneous milhy liquor, Whicli rem ained inti- mately mixed many days. EXPERIMENT XVI. The same quantity of yolk of egg, mixed thebalsam and water as speedily, and the mixtureremat ned uni ted as long as the sermer; but thetast: of this Was more Unpleasant. Ex PERIMENT XVII. A scrupte of the mucit age mixed half a drachmos balf. Perv. with an OUnce of Water, as perfectly and expeditiousty as a like quantity of the vitet. ovi, and covered the iaste of the balsam much bellor, though it parted seoner froin the mucilage
44쪽
mucilage than the vile . ovi, when thus mixed in equat quantities. EXPERIMENT XVIII. Balsam os Gile ad, the thinner Stras burgh turpentine, the fine liquid resin os late years brought frona News undi and and Nova Scotta, Common-ly called balsamum Annapolitanum, treated in the fame manner, Uni ted With water as rea lily, by the means of the muCil age, as When the et Del. Ozi is used, and the iaste at the fame time Mas
45쪽
rnanagement, and continued perseedy mixed With the water a considerable time. EXPERIMENT XXII. One scrupte of balsam. Tolu, one scrupte of the naucllage, With the fame proportion of theother ingredients as in the former experiment, succeeded rather beller, and made a neat draught fuit of the flavour of the balsam. EXPERIMENT XXIII Myrrh half a drachm, mucilage of gum Arabisone drachm, firit rubbed together, and thenmixed with one ounce and half of Water, forme la sinooth uniform mixture, Whicli continue lequatly united severat days, When a smali partsubsided, but, upon saaking the mixture, soon resumed iis sormer appe arance. Ex PERIMEN Τ XXIV. The sanae quantity of myrrh rea lily dis solve i, by attrition, in the fame quantity of water, Withotat the naucllage, but the disterent paris soon separate i. EXPERIMENT XXV. Hals a drachm of the common styrax, trealedas the myrrh, EX P. XXIV.) so far dissolved, asto communicate a strong but fine flavour to the
EXPERIMENT XXVI. I took sive gratias of camphire, With a scrupleos mucit age of gum Arabic, and an ounce and half of Water, and it sol med a very agreeabledraught,
46쪽
3 2 Experiments on mising Oils, Vc.
EXPERIMENT XXVIII. A scrupte os perma ceti, rubbed With an equalquantity of mucilage, malles an elegant draught: but more labour is here required than in the common solution with yolk of egg; the miκ-
geneous, the Derma ceti appearing only like acloud on the top of the phial seme days after ;but, on agitation, becomes persectly sinooth, and iis taste as litile rancid as When the mixture mas fressi made. EXPERIMENT XXIX. Four grains of mussi, one scrupte of the muci-lage of gum Arabic, one ounce and half of water, of spirituous water and simple strup, of each adrachm, With very litile labour, form an agree- able draught ; Whicli appeared uniform, and Continued so for me time, when the mussi sub
47쪽
EXPERIMENT XXX. I took one scrupte of balsam. sulph. With a scrupte of mucilage, and one ounce and half of Water; and this also mixed agreeablv, and separated but litile on standing sonae time : thetaste was likewise lesis ostensive than might have been expected. EXPERIMENT XXXI. With ten drops of Oil of cloves, one o ance of water, and a scrupte of mucilage of gum Arabic, a perseet union may eastly be produced, and the
mixture continues Uni rin many dayS.
EXPERIMENT XXXII. I tried the fame experiment With sive drops o oti os cloves, anniseeds, and nutmegs, by means of the mucilage of gum Arabic, and an ounce, and half of water, Whicli readily united. EXPERIMENT XXXIII. A mucilage Was prepared of clean gum traga- eanth, dissolved in the same Water, and of a ssimilarconsistence With that made frona gum Arabio ewith this mucilage I repeated the prece ling ex periments by agitation, but could not unite Oiland water by this medium so speedily or lasting-ly as by the mucilage of gmn Arabic, though Imade use of double the quantity of mucilage tolliat os oti in s me of the experiments. E X P Ε R I M E N Τ XXXIV. The mucilage of gum tragacanto was also tri dwith the balsams, by attrition, but a larger quantity Was required, and the union Was neither soVo L. II. D persect
48쪽
persect nor so lasting ; though by simple agitation, double the quantity of mucit age mixed the
Many of these experiments, by attrition, I repeated with mucilage of quin ce-seeds, made of the like consistence With the others I had used; and found the mixture succeeded very Well, and in most of them better than with the mucilage of
EXPERIMENT XXXVI. I likewi se made triat os starch, reduced to a Jelly by boiling it with water, and found that thisalso united many of the liquid restias ; though onstanding they separated: severat strups merelikewise made use of for the like experimenis, but scarcely any of these succe eded: syrup of marsti mallows anMers the best; but even this is inferior to a much smaller quantity of the muci-lage of gum Arabic of the same consistence. EXPERIMENT XXXVII. I tried to cover the acid of vitriol by these mucilages, and seund that of gum Arabio an swered best ; the quince-seeds beller than theiragacanth; and that beller than the Brup altheae ethese I did by agitation.
49쪽
In 17 8, Ι received a MS. si om a corre spondent at Dublin, intituled, A neis method forobe improvement of the manufacti res of drugs, in atreatisse on the elixis proprietatis, Which was printed here the fame year Under this titie : atthat time I ascribed it to Dr. I Utty, frona whom I received it, though it Was sent to me as thework of an anonymotis aCquaintance: but Iliave since been informeli, the public is indebled for it to H. Barion, an ingeniolis apothecary in Dublin. Though these circumstances may seem sol eignto the subject, yet as Ι thinii the treatisse above mentioned contains much useful instrtristion, andas I am obliged to it for the hint Whicli gave riseto the preceding experimen is, and for the ad
50쪽
36 Remaris on ise precering Experiments.
Vantages received frona them, I thinti it is biit justice to give the public this information, Our author telis has in page zo) that he disi
solved gum Arabic in Water to the consistence of a thich mucilage, with this made an Union os turpentine With water, in the form os a neat,smooth emulsion : he likewise acquainis Us, that the fame mucilage, with some oti os almonds and
common mater, Were mixed together in the sormos an emulsion.
At this time I was engaged in some en quiries into the origin os amber ; and, as I had manyreasons to belleve that it Was a Vegetable resin, reduced by time and a vitriolic acid in to thecondition we now see it, I imagined it not im- practicabie to produce a substance resemblingamber in many of iis properties To mix a strong vitriolic acid intimate lywith any of the vegetable resins, was a dissiculty I could not surmount, tili I met with the treatisse above mentioned; for the oti os vitriol buriis that part of the resin Whicli it touches, the moment they come in contach; and is the oil istowered with Water, it Will not mix by any othermeans I am acquainted With, so intimately, and without burning the resilia, as by the assistance ofa mucit age ; and I had the pleas ure of observing, frona the first essay Ι made, that the mixture in stantly gave the fragrance of amber sum cienti Vstrong and distinct.