384 APPENDIX E. 



they did not attain their full growth ; both were gathered on 

 October 28. 



II. Commencement of experiment in solutions luithout am- 

 TYionia on June 10. — a and b received on July 12 a supply of 

 0"2 gramme nitrate of ammonia ; on July 23 they were placed 

 in a fresh solution, to which was added 0*2 gramme acetate of 

 ammonia ; both plants died on July 31. Plants c and d received 

 normal solution on August 4, which was neutralised with phos- 

 phoric acid ; c died on August 9, d recovered somewhat, but 

 remained sickly till gathered on September 27. 



III. Experiments tvithoid nitric acid. — Commencement on 

 June 10; rapid decay of the plants; by July 1 A and b were 

 abeady dead. 



IV. Experiments ivitJiout nitrogen. — Commencement on 

 June 10. In the first week the growth was excellent, but in the 

 second week it came to a stand. A lived till gathered on Sep- 

 tember 27 ; height 15 centimetres, length of roots 82 centi- 

 metres. Plants c and d received on July 11 each 0-2 gramme 

 nitrate of ammonia, and on July 17, also, the same quantity. 

 The influence of this salt was rapidly visible. On August 4, c 

 and D received normal solution. Plant c was gathered on Septem- 

 ber 27, height 75 centimetres. Plant d gathered on November 

 15, was in a healthy state, and had attained a height of 120 

 centimetres. 



V. Experiments without soda. — Commencement June 10. 

 The early vegetation was very luxuriant ; in the end of July, 

 however, the plants were not progressing. On August 4, the 

 plants received normal solution ; two died, but A and b made 

 further progress, a and b were gathered on October 30, height 

 of A, 205 centimetres ; b stunted. 



VI. Experiments without lime. — Commencement June 10. 

 Plant A had reached a height of 2 centimetres on July 17 ; but 

 made no further progress, b received on July 1, 0*1 gramme 

 lime in the form of nitrate, and, on August 4, normal solution, 

 vigorous growth. It had on November 15 four stems respec- 

 tively 107, 95, 75, 70 centimetres high, which were covered 

 with leaves, and had eight well-developed heads of fruit. 



