76 



ANALYSKS OK 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 98' 12 grs., and gave 



Per centam. 



81-564 



18-436 



2-267 



12-296 



Water - . . . 

 Dry matter .... 

 Ash 



Ash calculated dry 



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 centum. 



Water 77-374 



Dry matter - - "- - - - - £2 626 



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 repcns. 



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 (he whole plant - -  . 78' 12 



Dry matter 13-79 



Ash 2-09 



Ash calculated dry - - - - - - 10-05 



