of Organic Bodies. 13 



The examination of other parts of the animal body by the 

 method described is of some interest. As regards the boneSi 

 it is well known that all their inorganic constituents may be 

 extracted by dilute muriatic acid, so that the cartilage remains 

 in a pure state : likewise when they have been heated to redness 

 with exclusion of the air, muriatic acid dissolves the inorganic 

 salts, and leaves pure carbon. We know that bone-black, as 

 it is called, may be decomposed in this manner. 



Thus the bones, like the liquid and solid excrementitious 

 matters, contain the larger amount of their inorganic salts in 

 a perfectly oxidized state, and entirely belong to the teleoxidic 

 substances. This explains the fact that ground bones form 

 one of the best manures. 



The bile (ox-bile) has been examined by M. Weidenbusch 

 in the same way (Appendix XII.). Likewise, in this case, the 

 surprising result has been arrived at, that the inorganic con- 

 stituents, as in the excrements, exist almost wholly in the oxi- 

 dized state, and that the bile is therefore a teleoxidic substance. 



By far the larger portion of the inorganic constituents of 

 the carbonized mass of the bile is extracted by water. It dis- 

 solves principally the carbonate, phosphate, and sulphate of 

 soda, with chloride of sodium; the quantity of salts of potash 

 dissolved is, however, very small. 



Muriatic acid extracted from it a small quantity of phos- 

 phate and a trace of silicate. The bases were principally 

 lime, soda, potash, magnesia and the protoxides of iron and 

 manganese. 



The washed residue yielded a very small quantity of ash on 

 incineration, which contained a remarkably large amount of 

 sulphuric acid, and but little phosphates. The bases were 

 principally soda, potash, magnesia and lime. 



The following are the quantities of the inorganic constituents 

 which were obtained in the various operations : — 



In the aqueous solution 16*01 8 grms. 



In the muriatic solution 0*869 



On the incineration of the carbonized residue O'V-i^S ... 



It is thus evident that the inorganic constituents of the bile 

 exist in an almost complete state of oxidation, precisely as in 

 the urine. 



The next question is whether the milk is also an excretion, 

 like the urine, and whether the whole of its inorganic consti- 

 tuents exist in a perfectly oxidized state. It appears, how- 

 ever, from M.Weber's experiments upon the milk of the cow, 

 that in addition to numerous perfectly oxidized salts, it also 

 contains a considerable amount of inorganic constituents in a 



