JINAI.YSI8 OF VEGETABLE AND ANIMAL SUBSTANCES. 7§ 



entire, or its principles: for, all vegetables bein*? almost or Its princi- 

 whoUy composed of woody fil>res and mucilage, which con- P'*** 

 tain oxigen and hidrogeu in the same projiortions as water; 

 it is evident, that, being taken into the vegetable, it com- 

 bines with charcoal to form them. 



If therefore it werie in our power to unite these two sub- Requisites th 

 stances in all nrojortions, and to bVing their particles to *^^ ^^'-^'^'catiori 

 -.,,,''„ • . I 1 J 1 1 1 °^ vegetable 



. a suitable degree ot appr(>smiat?oii, we shoiiid be able maturs, 



'to make with certainty all the vegetable substances, that 

 occupy the mean between acids and resins, as bugar, starch, 

 woody tibre, &c. 



Of animal substances we have hitherto analysed only Animal sufa» 

 fibrin, albumen, gelatin, "^ind caseous mJitter, stances ana- 



It follows from our analysis, that, in these four substances, ^^^ 

 I III- 1 1 • '• I 1 I 1-1 ^ neral con- 



and probably m all similar animal subfitances, hidrogen elusions. 



is in a larger proportion to oxigen than in water: that, the 

 greater the excess of hidrogen they contain, the greater 

 too is the quantity of nitrogen found in trtevn : that these 

 two quantities are almost in the same propovtion as in am- 

 monia; and it is probable, that tins proportion, to which we 

 come near, really exists; particulariy as vvc always find a 

 little too much hidrogen, and all the errours, to which we 

 are liable, tend to increase the quantity of this principle. The 

 reader may judge of this from the two following analyses. 



A hundred parts of fibrin contain Constituent 



Carbon 5 1-675 P^^iples i^ 



fibrin, 

 Hidrogen and oxigen in the proporti.no t. at form 



water • 2fi'607 



Hidrogen in excess .......••«•• 5*357 



Nitrogen . • 16-331 



100 



A hundred paHs of caseous matter contain 3^^ of chee»y 



Carbon • - 57190 ""^'^®''- 



Hidrogen and oxigen in the proportions that form 



water 18'778 



Hidrpgen in excess • 5'680 



]>fitrogen ...r.< *..,...., 18-352 



100 

 Admitting 



