th 'Anahjses of ^T. 'Kldproth:^ ' ' . 31 1 

 gla-as retort brought to' a red heat, :aDd- which'communl- 

 cated with a mercurial apparatus, gave ior products : _ 

 1st, One hundred thirtv-five' cubic inches" of elastic fluid 

 (allowance beino- made tor the air contained in the retort 

 and the tube of 'communication), composed ot 17 of car- 

 bonic acid gas absorbed by_ lime water, and 118 ot car- 

 bonated hydrogen gas. ' ■ 



2d, Twenty-four grains of acidulous water. As the 

 fossil when boiled in water communicates to it no aci- 

 ditv, this acidulous phlegm iu therefore a product ot the 

 distiiiation, and probably composed of pyrohgneous acid 

 (empvreumatic acetotis acid) . ■ • i i • i i, j 



3d,' Sixty grains of a brown, clear, fixed oil,, which had 

 a taste only slightly empyreumatic, and no; reden)blance to 



bituminous oils. "' " • ' ., 



4th, The carbonaceous residuum taken finilt the retort 

 Weighed 'T7± grains. Wh6n burnt in a capsule they were 

 reduced to 37 arains of 'light brown ashes,' mi-xod with grams' 

 of sand : the charcoal had consequently lost 401 grains. 



5th-, Water boiled over the ashes, aivd then lijtercd, gave 

 a slisht tintof red to blue turnsole paper:' it left by evapo- 

 ratio^n sulphate of lime, which, when roasted, \veighcd 5 

 grains. A small quantity of free caustic lime had restored 

 tlie blue colour of the red turnsole paper. 



6th, The lixiviated ashes being- dissolved in nitro-muri-. 

 atic acid, the insoluble sandy residuum weighed 23 grams.. 

 7th, The caustic solution of ammonia produced iU' it a' 

 H«dit brown deposit, from which were extracted by caustic 

 al'kalies, two grains of the oxide of iron and one gram ot' 

 alumine. r v. ' 



8th, The rest of the solution, by carbonate of potash, 

 gave carbonate of lime, which by calcination was redtice'c^ 

 to four grains of pure lime. 



• Exp. II. Alcohol, put to digest on peat earth, .extracted 

 from it a reddish brown tincture, which by evaporation 

 was thickened into a reddish dark brown extract, the taste 

 of which was very bitter, without being disitgrccable, and 

 approached near to that of an extract from the comnujii 

 kinds of cinchona. It diss^olved only imperfecly ui water, 

 which it rendered turbid. 



Exp. m.- Four ounces of pcaf earth, boiled at three 

 diflercnt times with water, gave a clear reddish browll de'-» 

 eodtion, in no manner either acid or alkaline. Evaporated 

 in a gentle heat it left a dry pulverulent extract, ot a 

 walnut colour, weighing 145 grains, baring the same taste, 

 lul less bitter than the preceding. A little water. mime- 

 ' Ij 4° dialclv 



