HISTORY OF GEINE. 



81 



tical, and Boullay's analysis of ulmic acid is cited to 

 establish their constitution. The whole doctrine of 

 naming the elements of soil may be tabulated. 



The Organic Elements of Mould, or Humus, by 

 Berzelius's division. 



1832. 

 1. Extract of Mould, 



2. Geine, 



3. Carbon, mould, 



4. Crenic acid, 



5. Apocrenic, 



1840. 

 1. Extract of Mould, 



2. Humic acid, 



3. Humin, 



4. Crenic acid, T 



5. Apocrenic acid, 



Vegetable extract of 

 Authors,apotheme of 

 Berzelius. 



Ulmic of Boullay and 

 others, sacchuhnic 

 of Liebig. 



Ulmin of Authors, 

 sacchulmin of Liebig 



Not admitted by Lie- 

 big and Graham, ad- 

 mitted by most oth- 

 ers. 



It becomes, therefore, a question whether the term 

 geine, is not the only proper term to be retained, ap- 

 plicable to the various forms found in soil ; and its 

 distinction into soluble and insoluble, well founded, for 

 all practical purposes ? This question may be an- 

 swered by a reference to the analysis of geine. It 

 indicates not only that, so called in 1832, by Berz- 

 elius, the equivalent of which, by the table, is ulmic 

 and humic acid, but also, all the three forms, except 

 the nitrogenous. On this subject, during the imper- 

 fect state of organic analysis ten years ago, there 

 may have been room for doubt ; especially when the 

 most consummate organic analyst of the age, Liebig, 

 asserts that it is exceedingly difficult to estimate 



