554 
lilE. J. B. LAWES, DE. GILBEET, AND DE. PDGH ON 
ones yellow ; the newer and upper leaves green, healthy, and -vagorous ; marked im- 
provement since adding the ammonia-solution on June 10, the effect of which was 
manifest within two days after the addition, 
June 24. — Plants 5 to 7 inches high, with four leaves each ; lower leaves dried up, 
but upper ones green and vigorous ; obviously improving ; forming stem with nodes. 
July 4. — Plants 7 to 8 inches high, with five to seven leaves each ; the newer ones 
broad, well developed, and of a deep green colour ; upon the whole vigorous. Second 
pipette-ful of the ammonia-solution added. 
[Drops of water accumulate as described in reference to No. 1 of this date,] 
July 11. — Plants 8 to 9 inches high, with six or seven leaves each; lower ones pale 
yellow, upper ones green and vigorous. One of the stems sending out a shoot at its base. 
Third pipette-ful of ammonia-solution added. 
July 22. — Growing very well ; tillering very much. Fourth pipette-ful of the ammonia- 
solution added. 
July 29. — Plants 12 to 16 inches high; one with six shoots 4 to 8 inches long; one 
with one shoot 3 inches long ; and the other with two shoots just forming ; shoots, and 
upper leaves, green. The ammonia seems to induce multiplication of shoots instead 
of upward growth; no nodes clear of the sheath. Fifth pipette-ful of the ammonia- 
solution added. 
August 10. — Green and fiourishing. 
August 24. — Very similar to Wheat No. 6 at this date. 
Scjptemher 20, — Plants taken u ]}\ — 
The lower leaves begin to lose colour considerably, no increase of growth apparent for 
some days, nor any tendency to form seed ; hence, the season being far advanced, the 
plants taken up. 
Great development of root ; the plate under the pot covered with a dense network 
ramified from a few fibres extended to the bottom of the pot ; a similar network at the 
bottom and partially up the sides within the pot ; comparatively little in the centre of 
the soil. 
Preparation and analysis as described at pp. 543, 544. 
No. 8. — Parley ; four seeds ; prepared soil ; with nitroqenous manure. 
(See Plate XV. fig. 8.) 
June 9. — Three plants up ; two 1^ inch and one 3^ inches high ; colour pale. 
June 10. — A pipette-ful of ammonia-solution ( = *00578 gramme N.) added to the soil. 
June 15. — Three plants ; about 4|^ inches high ; each with two leaves and another 
forming. Improved by the ammonia added June 10, but not so much as the Wheat 
No. 6. 
June 19-20. — During thenight the shade was cracked, from the bottom in the quick- 
silver, 9 inches upwards. The pot with its contents was removed and put under a shade 
over sulphuric acid. After four days it was returned to its place, and covered with the 
