180 Prof^ H. Rose on the Inorganic Constituents 



The following results were obtained in the three divisions 

 of the examination of the inorganic constituents of the rape- 

 seed and rape-straw: — 



Seed. Straw. 



Extracted by water from the car-1 ^.^^ ^^ g^.^^ ^ 



bonized mass J '^ *^ 



Extracted by muriatic acid . . . 35*60 p. c. 4«5*91 p. c. 

 In the ash of the residue . . . 54-'90 p. c. l^'SO p. c. 



100-00 p. c. 100-00 p. c. 



The inorganic constituents of the rape-seed amounted to 

 2*48 per cent., those of the straw to 3-93 per cent. 



Hence the following are the whole of the inorganic consti- 

 tuents of the rape-seed : — 



Chloride of potassium . . 0-13 



Potash 28-94 



Soda 



Lime 



Magnesia 



Peroxide of iron .... 

 Phosphoric acid .... 



Sulphuric acid 



Carbonic acid 



Silica 



Oxygen. 



4-90 I 

 0-44 l^ 

 2' 3 3 

 4-97 

 0-22 J 

 22-851 

 0-80 

 1-14 

 0-36 



12-86 



y 25-15 



100-00 



The amount of oxygen in the acids is twice as great as that 

 of the bases in the rape-seed as in peas. 



The rape-straw yielded the following inorganic consti- 

 tuents : — 



Chloride of potassium 

 Chloride of sodium 

 Potash . . . 

 Lime .... 

 Magnesia . . 

 Peroxide of iron 

 Phosphoric acid 

 Sulphuric acid . 

 Carbonic acid . 

 Silica .... 



Oxygen. 



13-29 



27-10 



10000 



Two analyses were also made of rape according to the old 

 plan, and were found to yield the same errors as those which 

 have been previously described. 



