574 MR. J. B. LAWES, DR. GILBERT, AND DR. PUGH ON 
the soil covered with plants, growing well; 3 to 4 inches high, with two or three tri- 
foliate leaves each. 
July 19.—Seventh pipette-ful of the sulphate-of-ammonia solution added. 
July 28.—Fighth pipette-ful of the sulphate-of-ammonia solution added. 
July 29.—The plants growing, but not vigorously; some black and dead, and some 
withering leaves; some petioles more than 4 inches long. 
August 10.—Ninth pipette-ful of the sulphate-of-ammonia solution added. 
August 17.—Tenth pipette-ful of the sulphate-of-ammonia solution added (new solu- 
tion =0-00359 gramme N.). Green and growing well; twenty to twenty-five stems 4 
to 6 inches high; a good many roots above ground. 
September 7.—Eleventh pipette-ful of the sulphate-of-ammonia solution added. Large 
strong roots visible; numerous leaves from the base; not much development of stem; 
length of petioles 3 to 5 inches. 
October 5.—Twelfth pipette-ful of the sulphate-of-ammonia solution added. Not 
growing much, yet not dying; stems becoming bushy. 
October 24.—Many of the lower petioles and leaves dead, and some a little mouldy ; 
from the base of the dead petioles generally spring a number of green leaves, and petioles 
2 to 4 inches long bearing green leaves, which look healthy, but almost stationary from 
day to day. 
October 26.—Plants taken up :— 
Twenty-one plants; much as at last date. 
Roots somewhat matted at the base, and throughout the surface of the soil ; extending 
2 to 3 inches through the soil, and some to the inner sides of the pot; none among the 
flints, or in the pan under the pot. 
Soil rather wet, loose, and porous. 
Preparation and analysis as described at pp. 543, 544. 
No. 15 (1858).— Wheat, Barley, Oats, Beans, Peas, and Clover, in a pot of Garden soil. 
May 20.—Some of the plants just coming up. 
May 29.—Wheat, Barley, and Oats, 6 to 8 inches high; Beans 4 to 6 inches high, 
with some specks on the leaves; Clover up and growing. The condensed water yellowish, 
and gives a yellowish-green deposit. 
June 19.—The pot full of green herbage. Wheat, Barley, Oats, and Beans, all 
healthy and growing well; Peas 3 to 4 inches high; Clover 2 to 3 inches, with three 
leaflets. 
June 26.—Wheat and Barley touch the top of the shade, and the plants crowded; 
Clover 3 to 4 inches high. 
July 14.—Shade full of growing matter. Wheat and Barley just heading. 
August 2.—The Oat heading, with two grains; Wheat growing, but the ends of some 
of the leaves dying. The two Beans quite black and dead. Several kinds of weed 
come up; two in bloom. 
