»nd 100 parts of the second :

of carbon - - - - 51,45

— oxygene - - - 42,73

— hydrogene - - 5,82

Supposing woody fibre to be a definite compound,these estimations lead to the conclusion, that it con-sists of five proportions of carbon, three of oxygene,and six of hydrogene; or 57 carbon, 45 oxygene,and six hydrogene.

It will be unnecessary to speak of the applica-tions of woody fibre. The different uses of thewoods, cotton, linen, the barks of trees are suffi-ciently known. Woody fibre appears to be an in-digestible substance.

18. The acids found in the vegetable kingdomare numerous; the true vegetable acids whieh existready formed in the juices or organs of plants, arethe oxalic, citric, tartaric, benzoic, acetic, malic,r/allic, and prussic acid.

All these acids, except the acetic, malic, andprussic acids, are white crystallized bodies. Theacetic, malic, and prussic acids have been obtainedin the only fluid state; they are all more or less so-luble in water; all have a sour taste except thegallic and prussic acids; of whieh the first has anastringent taste, and the latter a taste like that ofbitter almonds.