COMPOSITION OF VARIOUS TREES 



105 



Allied trees are Cercis siliquastrum or tlie 

 Judas-tree with rounded leaves, and Ccesalpinia 

 hrasiliensis — which produces the well-known 

 Brazil-wood. 



Grevillea {Grevillea~ robusta, Natural Order, 

 Proteacese) is a greenhouse foliage shrub. It grows 

 in any good soil of a light nature, or in a compost 

 of fibrous peat, turfy loam and silver sand. 



The ashes of the shrub contain in 100 parts ^ : — 



Iron oxide . 

 Magnesia 

 Lime . 

 Potash . 

 Soda 



Phosphoric acid 

 Sulphuric acid 

 Chlorine 

 Silica . 



4-00 

 8-93 



16-23 

 7-61 

 9-40 

 4 19 



1110 

 2-12 



35-22 



Guelder Rose {Viburnum opulus, Natural 

 Order, Caprifoliacese) is a hardy deciduous flowering 

 tree. It grows in good ordinary soil, and flourishes 

 in open sunny shrubberies. 



The ashes of the wood contain in 100 parts : — 



A. B. Griffiths, ibid., p. 31. 



