550 MB. J. B. LAWES, DE. GILBERT, AMi I)K. IM.'OII OX 



(c) Seed with four stems: — (1) 22 to 23 inches high, with green head and six unripe 

 grains; leaves dry and ripe; (2) stem 15 inches high, dried up, head-sheath formed; 



(3) 19 inches high; yellowish-green head, with nine glumes, and undeveloped seeds; 



(4) ahout 15 inches hi^h ; rather »rcen, sheath swollen, and heard appearing. 

 During Che last three weeks .some heads came out more, and indications of others 



developed ; otherwise not much change. From the low temperature and lateness of the 

 season, it was thought the plants would not mature farther. 

 Preparation and analysis as described at pp. 543, 544. 



No. 9. — Barley (1857); four seeds; prepared pumice} with nitrogenous manure. 



(See Plate XV. fig. 9.) 



June 9. — Four plants ; one quite small ; the others 3 to 4 inches high. These more 

 grown than the Barley plants Nos. 2, 3 & 8 ; but the leaves, particularly the lower ones, 

 yellower at the ends. 



June 10. — A pipette-ful of ammonia -solution (="00578 gramme N.) added to the 

 soil. 



June 15. — Four plants ; 5 to G inches high ; four leaves each ; lower ones losing 

 Aitality. Lower leaves were too far gone, but a most marked improvement in the 

 upper ones since the ammonia-salt was added ; it was manifest in two to three days after 

 the addition. 



June 24. — Four plants ; height 6 to 8 inches ; improved very much by the addition 

 of the ammonia-solution. 



July 4. — Plants 8 to 13 inches high; six or seven leaves each; stems very slender, 

 but show well-formed nodes. Second pipette-ful of ammonia-solution added. 



[Drops of water accumulate as described in reference to No. 1 of this date.] 



July 11. — Plants 9 to 14 inches high; seven or eight leaves each; upper ones 

 deep green ; lower ones yellow ; stems red. Third pipette-ful of ammonia-solution 

 added. 



July 22. — Growing very well; showing indications of heading. Fourth pipette-ful of 

 ammonia-solution added. 



July 2d. — The four plants all out in head; about 30 inches high; each stem six 

 nodes ; two of the plants have shoots 5 inches high. The ammonia seems to tend more 

 to new growth than to the development of the old. 



August 10. — Heads well developed. 



August 24. — The plants appear to be ripening ; heads turning brown ; but one new 

 stem is still green and growing. 



September 24. — Plants taken up : — 



Seven plants ; five 2 to 2^ feet high, one green ; one 1^ foot high, green head ; one 

 14 inches high, green. Six with heads, four ripe and two green ; the shortest plant 

 with green leaves and without head. Heads li inch long ; glumes all along the rachis, 

 but only some with grains. 



