APPENDIX. LVU 



The apparent difference of time. Their nutritive powers. 



Agrostis vulgaris Middle of April 1.2 3-4 



palustris One week later , 2.3 



stolonifera .Two, ditto 3.2 



canlna Ditto, ditto 1.3 



stricta Ditto, ditto 1.2 



nwea Three weeks, ditto 2 



littoralis Ditto, ditto 3 



nr/>mr Ditto, ditto 3 



mexlcana Ditto, ditto 2 



fascicularh Ditto, ditto 2 



LXXVI. Agrostis palustris. Wither. Bot. 2, P. 129, 

 Var. 2, alba. Engl. Bot. 1189. A. alba. 

 Marsh bent grass. 



At the time of flowering, the produce from a bog 

 earth, is 



oz. or Ibs. pet 1 acre 

 Grass, 15 oz. The produce per acre 163350 6-- 10209 6 



80 dr. of grass weigh when dry 36 dr.^ 



The produce of the space, ditto 180 dr. 5 73507 



The weight lost by the produce of one acre in drying 5615 2 8 



64 dr. of grass afford of nutritive matter 2. 3 dr.~> 

 The produce of the space, ditto 10.1 1-45 701 



At the time the seed is ripe, the produce is 



Grass, 20 oz. The produce per acre 217800 13612 8 



80 dr. of grass weigh when dry 32 dr. *J 



The produce of the space, ditto 128 dr. $ 8712 "" 



The weightiest by the produce of one acre in drying 8167 8 



64 dr. of grass afford of nutritive matter 2.3 dr.") 



The produce of the space, ditto 13.3 drJ 9i 



The weight of nutritive matter which is lost by taking the 

 crop at the time of flowering 1 , being one fourth part of its 



value - 146 3 10 



/: "be proportional value of grass, in each crop is equal, 



h 



