294 AGEICULTURAL EXPERIMENT STATION. [Jan. 



Milrcker * gives the following results obtained by Seyffert, 

 at Halle, with cole-rape : — 



FORM OF NITROGEN. 



Yield in Grams. 



No nitrogen, 



Leather, 



Steamed bone meal. 



Blood, . 



Nitrate of soda, . 



75.5 



469.0 



1,672.0 



1,654.0 



2,607.5 



In order to control the above experiment another test was 

 carried out with oats by Julius Albert-Miinchenhof : — 



Yield. 



Marcker remarks that leather produced but a slight 

 increase over the unfertilized, and that the quality of the 

 grain was poorest when no nitrogen was used, or when 

 leather was applied. 



Dr. Wm. Frear very concisely presents the work done by 

 Storer f as follows : — 



Storer tested the manurial value of sheepskin and sole- 

 leather, raw and roasted, on several soils in pots, applying 

 various phosphatic and potassic salts in solution. The crop 



* Jahresbericht Agr. Chemie, 1883, 241. 

 t Bulletin Bussey Institution, 2, 58-71. 



