196 
be sprayed. When the disease has existed previously, spraying 
should be done at an early period of growth, even if no disease is 
present. 
The well-known Bordeaux mixture, half strength, might be 
used ; or in its place a solution of sulphide of potassium (liver of 
sulphur) would also prove effective — sulphide of potassium, one 
ounce, dissolved in three gallons of water. 
Fungicides act differently on foliage under different climatic 
conditions, and experiment alone can show the relative strength 
of the mixture that may be used without scorching the foliage 
or fruit. 
XXXI.-EXPORT OP PARA RUBBER SEEDS. 
The following valuable note by Mr. H. N. Ridley, of Singapore, 
Malay States, Vol. V., No. 1 (1906) :— 
" As is well known, the seed of the Para rubber tree deteriorates 
very rapidly after it is ripe, and soon loses its germinating power. 
It is not always easy to send seed long distances without a very 
large percentage of losses ; at the same time the demand for seed 
in distant parts of the world is very considerable, and a good 
many experiments have been tried in the Botanic Gardens in 
various methods of packing to ensure their arrival in good con- 
dition. The reports received from the recipients of these seeds 
have been remarkably good, as the following records will show— 
7,500 seeds sent to Jamaica on August 31st were received on 
r, and Mr. Fawcett writes : ' The 7,500 seeds sent in 
biecnit tine are all germinating very well, and we shall scarcely 
lose 500 of them.' " 
[With reference to this consignment Mr. Fawcett remarks in 
the Bulletin- .,; ra , Vol. IV., 
No. 7 (1906) : « Over 87 per cent, of the seeds sown germinated, 
but some of the seedlings were constitutionally weak and died, so 
that only 5,071 plants survived, or about 68 per cent, of the seeds 
sown. A Wardian case arrived with 2,500 seeds, but only 18 plants 
were raised out of the whole number."] 
" One hundred were sent in a similar manner to Calabar on the 
date July 6th, and arrived on September 20th. The Acting 
Secretary writes in reply : ' The seeds were soaked in water for 
two days on their arrival, and were then planted with the upper 
portion left above the soil. Ninety out of the hundred seeds have 
lants^ germinated ( Nov ember 7th), and appear healthy young 
"To the Royal Gardens, Kew, 135 seeds were sent on July 6th, 
packed in charcoal in a biscuit tin. They arrived in a month, 
f™ T f, er T mmate d- On February 12th, 1903, 20 seeds were sent 
to Mr JO. prvey Vera Cruz, Mexico, who writes, May 19th, 1903, 
that out of the 20 seeds of Ihrm /„■„.■///, , M ,\ I htive 11 young 
plants. They came up in a few days, and possibly a few more 
may germinate, though three seeds were decayed.' These were 
