and in the Stack in HaymaMvg. 



51 



Table II. — Weight of Prochice in lbs. of Plot 4. 



Table III. — Produce, calculated per Acre, in lbs. 



Fresh produce in lbs. 



Weight of dry produce 



Produce calculated as hay (16^ 

 per cent, of moisture) . . 



^Nitrogenous substances . . 

 Non-nitrogenous mattei'S . . 

 Mineral substances (ash) . . 

 * Containing nitrogen 



23, 760 lbs. = 



lot. 12 c. 16_lbs. 

 Jo 140 lbs. = 

 1^2 t. 5 c. 100 lbs. 

 /6169lbs. = 

 \2t. 15 0. 9 lbs. 

 (59^04lbs. = 

 \5c. 30 lbs. 

 (4057 lbs. = 

 \1 t. 16 c. 25 lbs. 



492^8 lbs. = 



4 c. 44 lbs. 



94 lbs. 



Anxious to follow its fuller development with greater certainty, 

 I determined to mow some of the remaining experimental plots 

 from week to week during the month of July. 



Plot 5 consequently was mown for the first time on the 2nd of 

 June (or one week after plot 4), then subsequently a fortnight 

 afterwards, and again six weeks later, with the following 

 results : — (pp. 52, 53). \ 



If we compare the composition of the produce of plot 4, mown 

 on the 26th of May, with that of plot 5 mown on June 2nd, 

 scarcely any differences will be seen. Both contain almost 

 exactly the same amount of water, and both are also very equally 

 rich in sugar and correspondingly poor in nitrogen. The results 

 of my analysis from plot 5 satisfied me that the small percentage 

 of nitrogen which I found in the produce of plot 4 (and of which 

 I doubted the correctness until confirmed by repeated nitrogen- 

 determinations) was not merely accidental ; the two together 

 afford positive evidence that at the period when clover bursts 

 into flower the assimilation of nitrogenous constituents appears 



E 2 " 



