SOME NEW ENGLAND EUCALYPTS AND THEIR ECONOMICS. 



281 



that obtained from the mature trees, and often produce it 

 in larger quantity. By scientific treatment, beet has been 

 made to secrete sufficient sugar to enable it satisfactorily 

 to compete with sugar obtained from cane. Similar scien- 

 tific treatment, with the right species, should also make it 

 possible to produce turpentine from the Eucalypts to 

 satisfactorily replace that now derived from the oleoresin 

 of Pine Trees. 



Timber Tests, — 



TRANSVERSE TESTS. 





No. 1 



No. 2. 



No. 3. 



No- 4. 





B. 300 ; 



B. 3-00 , 



B. 3 02; 



B. 3'02 ; 



Size of specimen in inches 



D. 3-04; 



D. 303 ; 



D. 302; 



D. 302 ; 





L. 36. 



L. 36. 



L. 36. 



L. 36. 



Area of cross section, sq. in. 



9-10 



9 09 



9-12 



912 



Breaking load in lbs. per 



square inch. 

 Modulus of rupture in lbs. 



5,750 

 11,201 



5750 

 9-313 



5,050 

 9,901 



5-710 

 11,196 



per square inch. 

 Modulus of elasticity in lbs. 



1,383,640 



1,309,090 



1,230,379 



1,285,714 



per square inch. 

 Rate of load in lbs. per 



638 



650 



505 



713 



minute. 











Essential Oil. — Leaves were obtained from Armidale, 

 1st July, 1907, and from Uralla, 13tli July, 1907. The 

 material for distillation was collected as would be done for 

 commercial purposes, so that the yield of oil given here is 

 what would be obtained in practice. The crude oils in both 

 instances were red in colour, but this colour being due to iron 

 derived from the still, was easily removed with a few drops 

 of aqueous alkali, or by agitating with two or three drops 

 of phosphoric acid. The oil thus treated, after well wash- 

 ing and drying was of a very light lemon colour. When 

 rectified, the products were colourless. The crude oil has 

 a turpentine odour which is more pronounced in the large 

 fraction distilling near the temperature required for pinene. 

 Phellandrene does not seem to be present in the oil of this 

 species at any time, thus differing in this respect from the 



