8 Prof. H. Rose on the Inorganic Constitueiits 



Water extracted chloride of sodium and phosphate of pot- 

 ash and soda from the carbonized grains of wheat, but no 

 carbonates ; whilst from the carbonized wheat-straw it removed 

 chloride of potassium, chloride of sodium, some sulphate of 

 potash, and no phosphates, but a remarkably large amount of 

 silica. Muriatic acid subsequently dissolved only compounds 

 of phosphoric acid with potash, soda, lime, magnesia and per- 

 oxide of iron. From the carbonized straw, muriatic acid ex- 

 tracted combinations of phosphoric acid with lime, magnesia 

 and peroxide of iron, as also some silica. 



The carbonized grains of wheat, after exhaustion by the 

 solvents, yielded on combustion, compounds of phosphoric acid 

 with potash, lime, magnesia and peroxide of iron ; also some 

 silica. The solids remaining after the combustion of the car- 

 bonized wheat-straw consisted almost entirely of silica, with 

 extremely small quantities of the phosphates of lime, magnesia 

 and peroxide of iron. 



On comparing the amounts of the constituents obtained in 

 the different operations, we obtain the following results. 100 

 grms. of the grains of wheat and of the straw yielded — 



Grains of wheat. Wheat-straw. 



In the aqueous solution . . . 0*471 grm, l'216grm. 



In the muriatic solution ... 0*562 .,, 0*474 ... 



On the incineration of the car-"l « „ . ^ o ^ « ,- 



u ' A r 0*246 ... 2*135 ... 



bonized mass .... J 



Of the 2*135 grms. of fixed constituents which the carbon- 

 ized wheat-straw yielded, 2*022 grms. consisted of silica, and 

 only 0*113 grm. of phosphates. When this is taken into 

 consideration, this investigation also proves that the quantity 

 of so-called deoxidized inorganic constituents in the grains of 

 wheat is greater than that in the wheat-straw. 



Perhaps it is of importance to distinguish the organic sub- 

 stances, the inorganic constituents of which are contained in 

 them in a completely oxidized or deoxidized state, by separate 

 names. 



I shall therefore call those organic substances, the inorganic 

 constituents of which are in a perfectly oxidized state, teleoxidic 

 bodies. Pea-straw and rape-straw, as also even wheat-straw, 

 may be called teleoxidic substances, although they do not 

 deserve this appellation so strictly as many animal bodies, ©f 

 which we shall speak presently. But those organic substances, 

 the inorganic constituents of which exist partly in an oxidized 

 and partly in an unoxidized state, I shall call meroxidic sub- 



