AGRICULTURAL TEXT-BOOK. 167 



The Tussac Grass, from the Falkland Islands ; and the Pampas Grass, from the 

 Prairies of South America, have been introduced, the first into Ireland, and the lat 

 ter into Scotland, with great promise of success. There is little doubt but that they 

 would be found valuable in our Southern and Middle States. They are both remark 

 able for their feeding qualities. It is believed that the Tussac Grass requires the 

 neighborhood of the Sea ; or at least, of salt springs. 



385. As regards the ANALYSIS of grasses, little seems yet to 

 have been done with accuracy. Perennial and Italian Rye 

 Grass have been carefully examined by Thompson and Way ; 

 but with this exception we have no means of ascertaining what 

 species are included under the terms &quot; Hay&quot; and &quot; Grass,&quot; ana 

 lyzed by the various chemists; while the probability is that 

 each grass differs in its constituents, in its amount of nitrogen, 

 and in the peculiar salts which it requires ; and, likewise, accord 

 ing to the soil and climate in which it is grown. The English 

 meadow hay is usually formed of 20 or 30 species, besides 

 clovers; of the German we have no particulars. Mr. Norton 

 gives the following &quot; average of organic substances in Mead 

 ow Hay, from Boussingault and Johnston,&quot; but thinks the 

 amount of nutritive matter too high. 



Water, - - 16 



Starch, 4 



Gum and sugar, 12 



Nitrogenous substances, - 7 



Oil, - - 3 



Woody fibre, - - 50 

 - 8 



336. Thompson gives the following analysis &quot; of almost en 

 tirely Rye grass, (Lolium perenne&quot;) 



Water, ..... 75 



Soluble Salts, ? -i q/&amp;lt; 



Silica and Insoluble Salts, $ 



Organic matter, - - 23.66 



Or reducing the same to its ultimate constituents, when fresh 

 (A,) and dried at 212F. (B,) together with hay made at 

 Giessen, ( Dr. Will;) species of grass not mentioned (C ;) and 

 hay grown in the neighborhood of Strasburg, France, (Bous 

 singault;) species not mentioned (D) : 



