78 ANALYSES OF THE GRASSES. 



The following analysis of the ash of the plant in an earlier state, represents probably 

 its true composition when mature. 



6. Spear grass : cut May 13 ; height 16 inches, llower spikes just appearing. 100 grains 

 of ash gave 



Per centum 



Silicic acid - 48-300 



Phosphates 11-650 



Lime 0-030 



Magnesia ....... trace. 



Potash 3-531 



Soda 12-505 



Sodium 4-180 



Chlorine 6-365 



Sulphuric acid ...... 5" 156 



Organic acids ...... 4-400 



Carbonic acid not determined. 



96-186 S. 



VI. ROUGHISH MEADOW-GRASS (Poa trivialis). 



Grown in the rear of the State House : cut June 21 ; height 40 inches, in flower. Two 

 spears weighed 61'40 grs., and gave 



Per centum. 



Water 61-407 



Dry matter 38'593 



Ash 3-071 



Ash calculated dry 5 - 002 



Organic matter calculated dry ... 94 - 998 S. 



Burns hard ; ash slightly alkaline. 



VII. SWEET FESCUE-GRASS (Glyceria ftuitam). 



1. First specimen. Grew three miles south of Albany, in a swamp : cut June 22 ; height 

 40-48 inches, in flower (aquatic). One stalk weighed 123'25 grs., and gave 



Per centum. 



Water 58-369 



Dry matter 4T631 



Ash 2-198 



Ash calculated dry 5-279 



Organic matter calculated dry ... 94 -721 S. 



Ash saline. 



