439 
a previous Bulletin dealing with this subject. The contrasts between 
the constituents of the soils in the Botanic Gardens where the rubber 
grows superbly and that of the soil mentioned by Mr. Baur as well 
suited for rubber is very striking. For comparison I select two soils 
on which the biggest trees in the Gardens are growing and where the 
development and rapid growth is the greatest, No. i, a more peaty 
soil on which grew the celebrated tree, No. 2, and No. 6 on which 
grew’ the tree which attained a height of loo feet in 14 years. 
Botanic Gardens 
Peat Soil 
I 
6 
Organic matter 
34,000 
11,800 
88,060 
Oxide iron 
2,000 
6,200 
500 
Oxide alumina 
23,602 
51,280 
559 
Silicates 
32,000 
74,000 
2,860 
In the Garden soils the amount of organic matter is a little more 
than the silicates in the most peaty ; and less than one sixth of the 
proportion of silicates in the more clayey soil. In the Johore peat soil 
there is more than forty times as much organic matter than mineral 
88 per cent, against 34 and 11.8 in the good rubber gound. Could 
there be any greater difference between the soils ? 
It is always satisfactory to have analysis of soils on which cultiva- 
tion is going on and which can be watched, as by this we can learn 
gradually the effect of abnormal and normal soils on the plants groov- 
ing therein. — Ed. 
Copy. 
The Manager, Colombo, 19th August, 1910. 
Sungei Peradin Estate, 
Kukub, Johore. 
Dear Sir, » 
With reference to your letter of the 28th June, advising me of two 
samples of soil from the above estate, I have much pleasure in in- 
forming you that the same have been carefull) r analysed by my 
agricultural expert, and I am now enclosing a report on the soil, 
w hich I have no doubt you will find very interesting. 
As regards the mixtures recommended to you the same can be 
supplied at the following rates, viz : — 
Mixture for Peaty Soil . — At £10. 0. 0. per ton. gross weight cif 
Singapore. 
Mixture for Clayey Soil . — At £9.15.0 per ton. gross weight cif 
Singapore. Documents against payment. 
I should be glad to hear from you whether you have an intention 
of going in for manuring, as recommended by me, and in the mean- 
time. 
I beg to remain, 
Dear Sir, 
Yours faithfully, 
(Sd.) A. Baur. 
