AND ITS RELATION TO ANIMAL LIFE 141 



power to turn starch into sugar, and at the 

 same time banish the creeping fungus, other- 

 wise scale, from the trees. 



These result^ I have seen obtained by 

 manuring orange trees in South Africa. 



As evidence on this subject Mr. H. Tiffin 

 says that on the " Meeting of the Waters " 

 Farm, Queenstown District, South Africa, in 

 the year 1896 



" he treated the only two orange trees on the 

 farm, which had very yellow leaves and were 

 dying, with a quantity of very rusty iron at 

 the roots, and says three months afterwards 

 you could see a distinct improvement in the 

 trees, and the next year the trees were much 

 improved." 



And on the " Mopassa " Farm, in the same 

 district, where nearly all the orange trees were 

 dead from the same cause 



" Round one orange tree was placed a 

 quantity of rust with perfectly satisfactory 

 results." 



Mr. Tiffin also says " that while the orange 

 trees recovered, and were much improved by 

 the application of iron to the roots, still there 



