27 



i.e. of the total amount of salts present, in the order of the different 

 locations, beginning at the marsh and going in the direction to the 

 factory, and from there towards the mountains. These figures are 

 compiled in table X. 



Total acid radicales 



1.190% 

 .365 

 .326 

 .311 

 .222 

 .179 

 .134 

 .081 

 .063 

 .041 

 .032 



(It must be remarked here, that there is a fresh water spring near 

 location 1, which dilutes the soil solution, as may also be seen from the 

 analysis of the drainage water at this particular point (See page 26). 

 The normal salt content would therefore be much larger than is indicated 

 by the figure in the above table.) 



It is readily seen that the total amount of salts gradually dimin- 

 ishes in the direction from the marsh to the factory and from there to 

 the hills. There is quite a drop from the marsh soil to the first mineral 

 soil, but from there on the differences are more regular. 



If we now ask what relation exists between the salt content of the 

 soil and the condition of the cane as regards root system, diseases and 

 insects, we cannot base any conclusions solely on the figures given in 

 table X, but we must consider that the cane is a shallow feeder, the roots 

 being comparatively short, Therefore, we must in this discussion pay 

 particular attention to the surface soil in which the cane actually grows. 

 For this reason we have compiled, in table XI, the figures for total acid 

 radicles, and also for chlorine alone, present in the surface soils, again in 

 the same sequence as in table X. 



