76 ANALYSES OF THE GRASSES. 



V. SPEAR-GRASS (Poa pratensis). 



1. First specimen. Grown in the rear of the State House : cut May 13, large growth 16 

 inches high, just heading out. Eight stalks weighed 9S'12 grs., and gave 



Per cenlum. 



Water - 81-564 



Dry matter 18-436 



Ash 2-267 



Ash calculated dry 12-296 



Organic matter calculated dry ... 87*704 S. 



2. Second specimen. From the same place : cut June 8 ; height 30 inches, in flower. 

 Eight whole stalks, with radical leaves, weighed 210-25 grs., and gave 



Per cenlum. 



Water 77-374 



Dry matter 22-626 



Ash 2-073 



Ash calculated dry 9-162 



Organic matter calculated dry - - - 90-838 S. 



This plant also shows the same comparative decrease of inorganic, and corresponding 

 increase of organic matter as it. advances in age, as the Triticum repens. 



3. Third specimen. From Hoosic-falls, Rensselaer county : gathered May 20, 1848 ; 

 whole height 22 inches. 



PROPORTIONS. 



Stalk 43-00 



Leaf ...... 57-00 



Water in the stalk 80-75 



Dry matter 17*91 



Ash 1-34 



Ash calculated dry 7-48 



Water in the leaf 75-50 



Dry matter 21-56 



Ash 2-84 



Ash calculated dry .-..-- 13-17 



Water in the whole plant .... 78" 12 



Dry matter 13-79 



Ash 2*09 



Ash calculated dry - • - - - - 10*05 



