218 AGRICULTURAL EXPERIMENT STATION. [Jan. 

 Peruvian Guano (26 Analyses). 



Bat Guano (9 Analyses). 



Moisture at 100° C, . 



Ash, 



Phosphoric acid. 

 Nitrogen as nitrates, 

 Nitrogen as ammoniates, 

 Nitrogen in organic matter, 

 Insoluble matter, 



One sample con- 

 tained 1.31 per 

 cent, potas- 

 sium oxide. 



