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3852 QUEENSLAND AGRICULTURAL JOURNAL. [L May, 1899. - 
(4.) That they prefer the species Baehmeria nivea; but that they are 
also buyers of Behmeria tenacissima and Ban-Khea. 
(c) That the sueaes required by the syndicate would be continuous. 
and very large ; that it would be difficult to give exact figures, but 
that they could do with 10,000 tons to commence with. : 
(d) That they are at present prepared to contract at prices equivalent 
to from £10 to £11 per ton delivered in London, or at £7 a ton. 
f.0.b. in India. 
Jt has been conclusively proved that the Rhea (Bahmeria nivea) can be- 
grown in Queensland most successfully. Many thousands of plants have been 
sent to various parts of the colony, both by the Department of Agriculture. 
and the Acclimatisation Society. 1t only remains for enterprising settlers to 
undertake the cultivation of the Rhea to thus establish another national 
industry. ; 
The Rhea plant rapidly exhausts the soil, as may be seen by the following 
analysis :— 
Ten tons of dried stems, which, under favourable conditions, is the product 
of 1 acre, contain by analysis 251°98 lb. of potash, 15570 1b. of phosphorie 
acid, and 36970 !b. of nitrogen. 
Now although, as has been stated here, the Rhea plant will grow on any 
soil except swamp, it is quite clear that the constituents taken from the soil by 
the plant must be replaced if we wish to keep up a continuance of heavy crops. 
Hence, we must resort to artificial fertilising when natural manures are searce, 
These fertilisers are potash, phosphates, and nitrates. These fertilisers are 
not expensive in proportion to the resulting crops. We gave the prices of 
nitrate of.soda, superphosphate, and kainit in the February number of this 
Journal. Unfortunately by a clerical error the prices were quoted ‘at per 
sack instead of at per cwt. ; 
They are obtainable in Brisbane at the following prices:— 
8. d. 
Nitrate of soda ash os #3 12 6 per ewt, 
Superphosphate Pa Te: ah Ace 0 see vanes 
Kani te (poLashiyer We. syits wes ders () see 
For results of the application of these fertilisers, we would ask our readers 
to study the various articles. which we have lately published on the manuring 
of tropical plants, notably those relating to the manuring of corn (maize), 
which requires much larger quantities of plant-food ingredients than other 
cereals, removing, as it does, large quantities of potash and nitrogen from the 
soil, as in the case of Rhea. 
Forestry. 
SOME TIMBER TREES OF QUEENSLAND. 
By J. W. FAWCETT, 
Member of the English Arboricultural Society. 
THE SWAMP OAK (CASCARINA GLIAUCA, Sieber). 
Boranican Drscriprion.—The Swamp Oak is generally a moderately- 
sized tree growing to a height of from 30 to 50 feet, with a diameter of from 
9 to i2 or 15 inches, but in favourable localities it becomes a robust tree- 
attaining a height of from 70 to 90 feet, with a diameter of from 2 to 8 feet. 
Tt has leafless robust branches. \ 
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