160 H. G. SMITH. 



The evidence as to the length of time trees of this species 

 can withstand this cutting back appears to be wanting, but 

 that it is considerable is shown from the data so far 

 accumulated. The following instances will give some idea 

 of the persistence of reproduction. 



(a) There is a stump of E. Smithii about one mile on the 

 south side of Hill Top Railway Station, on the old abandoned 

 railway, right on the edge of the eastern side of the cutting. 

 This tree was felled when the railway was constructed 

 about forty years ago, and the new growth has repeatedly 

 been chopped back since that time, yet, to-day, it is pro- 

 ducing leaves and branchlets apparently as vigorously as 

 ever. Mr. Ohalker has cut the leaves from it for oil dis- 

 tillation several times, and from each gathering the leaves 

 have apparently yielded the usual amount of oil for the 

 species, while the oil itself has shown no difference in con- 

 stitution from the normal. 



(b) A sapling four inches in diameter, growing at Hill 

 Top, was cut stump high in April 1913; in May 1914 the 

 new growth had reached 15 feet in height, with an abund- 

 ance of leaves; in May 1915 the leaves were cut for oil 

 distillation. 



The accompanying photographs will illustrate the various 

 reproductive growths of this species: — 



Plate XIII. Taken in 1911. This tree was felled in 

 1906; the top branches were first removed for oil distil- 

 lation in 1908. In the photograph the tree shows three 

 years' growth. Material has been collected from this tree 

 for oil distillation four times in seven years, and to-day 

 shows again good growth. 



Plate XIV. This tree was a seedling, and as shown 

 is five years old. It had been lopped twice during that 

 period; the first time at one foot from the ground; the 

 second time at twelve feet. When the photograph was 

 taken the tree was over twenty feet high. 



