• r )7G MR. J. B. LA WES, DK. GILBEIiT, AND DB. H'OII OH 



high; Oats, two plants just appearing; Beans, one plant 4 inches high, two others just 

 appearing. 



July 19. — Second pipettc-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 Can . 



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 G 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; (b) 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; (b) 14 inches high with 

 ten leaves; (c) 25 inches high with eleven leaves. 



Oats, two plants ; (a) 26 inches high with seven leaves ; (b) 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; (b) 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; (b) 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 ; (b) 30 inches high ; two green and seven dead leaves. 



Beans, two plants ; (a) 9 inches high with three branches ; (b) 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 ; (a) has a shoot 22 inches long springing from the first node 2 inches from the soil, 

 and coming into head ; (b) has three small shoots, one ^ inch and one 1 J inch long, spring- 

 ing from the base, and one 3 inches long from the first node. Beans, slightly revived 

 since the last report. 



