On the Inorganic Constituents of Organic Bodies. 171 



the notion for which I contend, but would be a useful exercise 

 in drawing. P'orni a triangle ABC, and a transversal A'B'C, 

 draw any line K, and make an attempt by unassisted estima- 

 tion to alter K into L in the ratio of AC : C'B : and then 

 cover K over with a bit of paper. By estimation again, draw M 

 so that L : M as BA' : A'C, and N so that M : N as CB' : B' A. 

 Then N and K should be equal. In all this there is neither 

 occasion to think of a solid, nor of an area, nor of a numerical 

 product. 



XXIV. On the Inorganic Cofistituents of Organic Bodies. By 

 H. Rose, Professor of Chemistry in theUniversity of Berlin *. 

 [Continued from p. 24.] 



[The following are the Appendices referred to in the prece- 

 ding portion of Prof. Rose's paper, at p. 4 et seq. of the present 

 volume. They have been slightly, but not materially, abridged, 

 and principally only in regard to the details of such analytical 

 methods of examination as have yielded unfavourable results 

 in the hands of the author, or such facts as have been described 

 in the preceding part.] _ 



Appendix I. and II. 



Examination of the Inorganic 'Constituents of Peas arid Pea- 

 straw. By M. Weber. 



300 grms. of peas and 100 grms. of pea-straw were used. 

 After carbonization the mass was treated according to the 

 method previously described. 



The aqueous extract, when evaporated to dryness, fur- 

 nished in the case of the peas, ri^O grm.; in the case of the 

 pea-straw, 1*417 grm. 



These residues gave the following results per cent. — 



99-55 98-31 



These constituents, when calculated as salts, yield the fol- 

 lowing composition : — 



* From PoggendorfF's Annalen, Ixxvi. p. 338. 



