Dec. 1 , 1897 .] 
SuiJplement to the “ Tropical Agriculturist:' 
445 
rape oil and sulphur dried down to solidification, 
though to a certain extent successful, has not by 
any means the requisite durability. 
it has been well-known that a solution of 
iron sulphate has long been employed for the 
destruction of ground mosses which overrun 
plantations during damp weather. It has also 
been found that the same solution will cleanse 
the trunks and branches of trees of the numerous 
lichens which infest them, and may also be 
employed with success against the numerous 
colonies of AgaAcus campestris (the common 
mushroom) which spring up in cultivated spaces. 
This peculiarity of iron sulphate has led to new 
efforts being made with it against parasitic 
fungi on plants in general. 
On orders received from the Viceroy of 
India, Messrs. Carter & Co., the well-known 
seedsmen, shipped no less than 108 tons of carrot 
seed, which were collected an d despatch wdthin 
nine days of the receipt of the Viceroy’s telegram 
ordering the seed. The original order was, 
however, for 200 tons at a rate not exceeding 
£80 per ton delivered in Bombay. The seed 
which was brought over during the famine crisis 
W'as deemed sufficient to sow about 42 square 
miles of land. 
There is a demand for cow-pea seed among 
the Queensland sugar grow’ers who have come 
to recognise the merits of the plant as a nitrogen 
gatherer. Of leguminous crops the cow pea ma- 
tures most rapidly and occupies the ground at the 
shortest time, and produces perhaps the greatest 
amount of nitrogen. When grown and ploughed 
into the land just before it reaches maturity, 
a manure is thereby added to the land con- 
taining about 100 lb. of nitrogen, equivalent 
to that produced by the addition of 4 cwt. of 
sulphate of ammonia or 8 cwt. of dried blood 
per acre. 
