xxxvi APPENDIX. 



At the time the seed is ripe, the produce is 



z. or Ibs. per acrt 

 Grass, 75 oz. The produce per acre 816750 5104614 



80 dr. of grass weigh when dry 19 dr. 7 



The produce of the space, ditto 283 dr. $ ' 93978 2 ~ 12123 10 



The weight lost by the produce of one acre in drying 38923 4 



64 dr. of eTass afford of nutritive matter 3 dr. 7 



> <IQ9Q 9 9^09 13 o 



The produce of the space, ditto 56. 1 -> J 

 The weight of nutritive matter which is lost by leaving the 

 crop till the seed be ripe, being nearly one third part of 

 its value 1435 11 2 



The proportional value which the grass at the 

 time the seed is ripe, bears to that at the time of flower- 

 ing, is as 2 to 1 8. 



This grass, as has already been remarked, pro- 

 duces a fine early foliage in the spring. The produce 

 is very great, and its nutritive powers are considerable. 

 It appears from the above particulars, to be best adapt- 

 ed for hay. A very singular disease attacks, and 

 sometimes nearly destroys the seed of this grass; the 

 cause of this disease seems to be unknown; it is de- 

 nominated Clavus by some; it appears by the seed 

 swelling to three times its usual size in length and 

 thickness, and the want of the carcle. Dr. Willdenow 

 describes two distinct species of it; 1st, the simple 

 clavus, which is mealy and of a dark colour, without 

 any smell or taste; 2nd, the malignant clavus, which 

 is violet blue, or blackish, and internally too has a 

 blueish colour, a fcetkl smell, and a sharp pungent 

 taste. Brea$ made from grain affected with this last 

 species, is of a blueish colour; when eaten produces 

 cramps and giddiness. 



