28 
ROYAL HORTICULTURAL SOCIETY. 
measured 14-16 inches on July 1, had blue-green leaves, and 
manifested no tendency to flower. 
Box 5 (ammonia and mineral). Plants most advanced at start- 
ing; remained so to the end of May, when they declined through- 
out June, and only partially recovered at the end of the experi- 
ment, when their colour was of a blue-green, lighter than in 
3 or 4. No flowers were produced. The average height was 
14 inches. 
Box G (nitrate of soda and mineral). Plants vigorous at starting, 
remained so to the end of May ; declined in vigour during June, 
partially recovered towards the end of the month, and sank again 
at the extreme end. Blue-green colour. No flowers, but in general 
development more forward than any. Average height 15 inches. 
On the whole, the plants in box 4 showed a slightly greater de- 
gree of vigour throughout the experiment ; and their fluctuations 
were less extreme than those manifested in the other boxes. 
In reference to rainfall and temperature, it may be stated that 
the plants in boxes 1 and 2 showed no corresponding fluctuations. 
The plants in boxes 3 and 4 corresponded in their fluctuations pretty 
closely, at first with the rainfall, latterly with the temperature. 
The plants in box 5 showed the efl'ect of low rainfall towards the 
end of the experiment, but exhibited no perceptible relation to 
fluctuations of temperature. The plants in box 6 showed a slight 
corresponding fluctuation with that of the rainfall, but not per- 
ceptibly with that of the temperature. 
ii. Antlioxantlium odoratmi. 
Box 1. The plants showed a slightly increased development over 
those in No. 2 at an early part of the experiment, and maintained 
this position throughout. Average height in July 3 inches. 
Tillering occurred early in all six boxes. 
Box 2. Uniform throughout the experiment. "Very few plants, 
and those poor, with no tendency to form stem. Average height 
in July 2 inches. Colour bright green. 
Box 3. The development of the plants rose suddenly towards 
the end of May, was checked at the extreme end of May, increased 
again in the middle of June, and continued to do so until July, 
when the plants averaged 4 inches in height. 
Box 4. The plants developed slightly at the end of May and 
beginning of June, after which the course of their development 
was checked and never recovered itself. A greater amount of 
