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possible of the leaves at the base of the cutting. The effect of 
sulight in killing the spores which is made use of in this instance has 
been referred to above. 
A similar disease was reported by W. V, Tower from Porto 
Rico in 1906, in the Annual Report of the Experiment Station of that 
island. 
Leaf Spot : Spots varying considerably in size and shape were 
found to oocur on the leaves of the pine-apple. In typical instances, 
the spots consist of a straw-coloured central area surrounded by a 
dark margin. A black central portion may occur within the 
straw-coloured area, or scattered black blotches may be found, both 
of the appearances are due to the formation of the macrospores of 
Tluelaviopsis paradoxa. Sometimes, long white arms extended from 
the black border, at others the spots are white or straw-colouied 
throughout. The internal tissue is soft and decayed at first, but 
soon dries and leaves the injured area dry and sunken. 
The fungus gains an entry through wounds in the surface. 
These may be due either to grasshoppers, which feed on the leaves, or 
to the effect of the spines and edges of other leaves. The punctures 
made by a scale insect ( Diaspis bromeliae) do not appear to act as 
sources of infection. The disease is much more prevalent in damp, 
shady weather than at other times, as in bright, sunny weather the 
spores of the fungus are killed. The injury caused by this disease 
in Hawaii was not sufficient to justify the expense of remedial 
measures. It is clear, however, that any means tending to reduce 
the general prevalence of the fungus would not be without their 
effect on this disease also. A similar disease was reported by G 
L. Fawcett from Porto Rico, in 1908. 
(The Agricultural News of West Indies Vol. X p. 142). 
