82 
hurricane of that year completely destroyed several of the plots 
and left others so badly battered that this series had to be 
abandoned. 
The young trees in Series II. more or less escaped any serious 
damage, as at this stage of their growth they had not attained 
to a height of more than 2 or 3 ft. 
The damage caused by the hurricane necessitated a reorgani- 
sation of the plots, and in 1917 the present system of experiments 
was laid out. 
They are conducted in three series of 5 plots each :— 
Series I. Original (Young lime trees). 
» Ll. Duplicate 
Ill. ‘Triplicate (old trees found on the land). 
The following treatment given to the five plots in series J, is 
repeated in series II. and III. :— 
Plot 1. Complete manure (Dried blood, Basic Slag, 
Sulphate of Potash). 
» 2. Control—no manure. 
» 3. Mulch—-Lemon grass and peeve prunings 
at the rate of 5 tons per a 
° » 4. Nitrogen and Phosphate (Dried blood and 
Basic Slag). 
ren Siac and Potash (Dried blood and Sulphate 
of Potash). 
The area of each plot is approximately } at an acre. The 
trees are planted along the middle of a bed; there being 3 beds 
of eight trees, making a total of 24 trees to a plot. Each plot 
is divided from the next by a deep drain; and all such drains 
lead into a main drain, at the end of the plots, running at right 
angles. 
Reliable and useful results from these experiments cannot be 
expected for some time to come. It would appear, however, 
that nothing short of a complete fertilizer can be expected to 
give satisfactory results; and further observations may show 
that mulch, such as cut grass and bush, will, when applied every 
second year alternating with a complete fertilizer, become an 
important consideration in every practical scheme of plantation 
manuring. 
In addition to the main experiments other plots have been 
kept under observation since 1916, most of the trees having been 
planted in 1914. The most important of these consist of three 
plots planted with budded limes. 
Plots A. and B. consist of ordinary spiny limes budded on 
sour orange stock, whilst plot C. is planted with the spineless* 
type also budded on the sour orange stock. 
* This spineless variety was discovered up in the interior by Mr. H. F. 
Green, of Kew, in 1890-92, when curator of these Gardens 
Compared wi ith the ordinary spiny type its pla are much smaller, 
and the bearing qualities of the tree are less pro 
On the other hand, the rind of the fruit is much shies than the ordinary 
lime, and the juice is more plentiful and much clearer, and it contains 
fewer seeds. 
