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 tw^o soils 

 oh 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 100 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 1 1.8 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 grow- 

 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 carefully analysed by my 

 agricultural expert, and I am now enclosing a report on the soil, 

 which 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 £lO. 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. 



