150 HORTUS GRAMINEUS WOBU RNENSIS. 



panicle branches both ways, it droops much at first, and the 

 flowers grow much more loosely ; the spikelets are more round, 

 ovate, and pointed : whereas in the pratensis they are some- 

 what linear, flat, and obtuse. Curt. Lond. E. Bot. 1592. 

 Wither. Arr. 



Experiments. On the 16th of April, the produce from a fertile 

 peat soil, with coal ashes as manure, is 



Produce per Acre. 

 dr. qr. Ibs. 



Grass, 16 oz. The produce per acre 10890 



64 dr. of grass afford of nutritive matter 2 1 } 

 The produce of the space, ditto - 9 5 



At the time of flowering the produce is 



Grass, 20 oz. The produce per acre 13612 8 



The produce of the space, ditto, when dry 152 \ 

 80 dr. of grass weigh, when dry - 38 J 

 The weight lost by the produce of one acre in drying 7146 9 

 64 dr. of grass afford of nutritive matter 42 



The produce of the space, ditto 22 2 



At the time the seed is ripe, the produce is 

 Grass, 28 oz. The produce per acre 19057 8 



80 dr. of grass weigh, when dry - 32 i 



* C 7ftOQ (\ C\ 



The produce of the space, ditto - 179 0* J - 



The weight lost by the produce of one acre in drying 1 1434 8 



64 dr. of grass afford of nutritive matter 1 2 } 



The produce of the space, ditto 10 2 j 



The weight of nutritive matter which is afforded by 



the produce of latter-math per acre, is 380 



The weight of nutritive matter which is lost by leav- 

 ing the crop till the seed is ripe, exceeding one- 

 half of its value, is 510 7 8 



The grass at the time of flowering is of greater value, than at 

 the time the seed is ripe, proportionally, as 3 to 1. 



The weight of nutritive matter which is lost by leaving the crop 

 of this grass till the seed be ripe, is therefore very great. That it 

 should lose more of its weight at this stage of growth than at the 

 time of flowering, perfectly agrees with the deficiency of nutritive 

 matter in the seed crop, in proportion to the nutritive matter 

 afforded by the flowering crop ; the straws being succulent in the 

 grass of the latter crop, while those of the former are dry, and 



