244 MANURES FOR TREES 



economical method for attaining what to us seems a simple 

 problem, the conveying of oxygen to the tissues. I hope you will 

 be able to pursue the interesting field of work which you have 

 made your own." 



Manganese is also found in molluscs, crustaceans, 

 and other animals ; and in acting as a carrier of 

 oxygen, is undoubtedly of importance in the living 

 organism. It appears that manganese is almost 

 universally distributed as combinations with albu- 

 minoids or globulins, forming special ferments or 

 oxydases, which probably owe their oxidising pro- 

 perties to the metal they contain. 



There is also much to learn concerning the 

 physiology of manganese in the vegetable kingdom. 

 It is present in numberless trees and other plants ; 

 and it has been proved to be beneficial to plant- 

 life. 



tS* tp tF tF 



Manganese sulphate is soluble in water, and has 

 proved of value as a manure for vines in this 

 country. It should be applied at the rate of an 

 ounce to the square yard, as it greatly improves 

 the vitality of the vine and also the quality of the 

 grapes. 



Manganese sulphate stimulates and improves 

 young yews as well as other cone-bearing trees. 



The author grew oleanders with and without 



