576 MR. J. B. LAWES, DR. GILBERT, AND DR. PUGH ON 
high; Oats, two plants just appearing; Beans, one plant 4 inches high, two others just 
appearing. 
July 19.—Second pipette-ful of the sulphate-of-ammonia solution to each pot. 
July 28.—Third pipette-ful of the sulphate-of-ammonia solution to each pot of Cereals. 
August 2.—Wheat, four plants; 7 inches high; extremities of some of the leaves 
dying. Barley, three plants; two 9 inches, and one 7 inches high; two lower leaves of 
each yellow, remainder green. Oats, two plants; 10 inches high; the lower leaf of 
each dead, and the tips of some of the others turning yellow. Beans, two plants up; 
one 8, and the other 6 inches high. 
August 17.—Fourth pipette-ful of the sulphate-of-ammonia solution added (new solu- 
tion, =0-00359 gramme N.). All the plants growing luxuriantly. Wheat, about 14 
inches high; Barley and Oats, 8 to 12 inches high; Beans, 9 and 12 inches high. 
September 7.—Fifth pipette-ful of the sulphate-of-ammonia solution added. 
Wheat, four plants; (a) 14 inches high with ten leaves; (4) 13 inches high with nine 
leaves; (c) 15 inches high with ten leaves; (d) 11 inches high with ten leaves. 
Barley, three plants; (a) 23 inches high with eleven leaves ; ow 14 inches high with 
ten leaves; (¢) 25 inches high with eleven leaves. 
Oats, two plants; (a) 26 inches high with seven leaves ; (6) 29 inches high, nine leaves. 
Beans, two plants; main stems dead, but new shoots growing. 
October 5.—Wheat, four healthy and vigorous plants; (a) 14 inches high; two 
green and eight dead leaves; (6) 14 inches high; two green and seven dead leaves; 
(c) 15 inches high; two green and eight dead leaves; (d) 14 inches high; three green 
and eight dead leaves. 
Barley, three plants; two healthy and vigorous, and one less so; (a) 24 inches high; 
three green and eight dead leaves; (6) 18 inches high; three green and seven dead 
leaves; (c) 28 inches high; three green and eight dead leaves. 
Oats, two healthy and vigorous plants, in ear; (a) 30 inches high; two green and 
five dead leaves; (0) 30 inches high; two green and seven dead leaves. 
Beans, two plants; (a) 9 inches high with three branches; (4) 14 inches high with 
three branches. 
October 24.—Wheat, four plants, erect and firm; much as on October 5, but larger ; 
no nodes visible; but little tendency to form stem. Barley, much as on October 5. Oats, 
much as on October 5. Beans, apparently ceased to grow. 
Sixth pipette-ful of the sulphate-of-ammonia solution added. Wheat, four plants, 14 
to 18 inches high; stems stout and erect, but without visible nodes; very leafy. Barley, 
four plants, just coming to ear. Oats, two plants, main stems touching the top of the 
Case ; (2) has a shoot 22 inches long springing from the first node 2 inches from the soil, 
and coming into head ; (4) has three small shoots, one } inch and one 1} inch long, spring- 
ing from the base, and one 3 inches long from the first node. Beans, slightly revived 
since the last report. 
