I ■>" 



/ . Macarthuri grows quite well from seed, and the rapidit) ol growth 

 and the vitality ol the species are remarkable, so thai a continuation ol supply 

 ol l<-.i t material foi distillation from cultivated tr< es seems assured. 



The rapidit) ol growth can be judged from the illustration Plate c), 

 which represents a shrub photographed 15 months alter the seed was sown. 



Plate C. 



EUCALYPTUS MACARTHURI 

 Grown from seed ;it Emerald, Victoria. Fifteen months' growth. 



A sample of the oil distilled from the clippings from bushes only 22 

 months old from the time of planting the seed, was presented to us by Mr. W. 

 Kussel Grimwade, of Melbourne. This oil on analysis was found to agree 

 in general characters with that from naturally-grown material; it contained 

 70-1 per cent, of geranyl-acetate, saponiliable in the cold with two hours' contact, 

 an amount of ester even greater than that usually found in the oil from 

 old trees, and equal to that from the "suckers." 



This result again supplies evidence as to the comparative constancy of the 

 oil products of identical species of Eucalyptus, a factor ol considerable important e 

 when the cultivation of particular species of Eucalyptus is under consideration 



EUCALYPTUS CITRIODORA 



It can also be demonstrated with other Eucalyptus species that the 

 formation of their characteristii odoriferous constituents commences very earl) 

 in the life histor) ol the plant, and remains | ersisteni throughout its whole 

 growth. In the ver) early leaves of the seedlings of E. citriodora, for instance, 

 the citronellal odour oi the oil oi this species can readily be detected, and this 

 is also the case with other Eucalypts, tin; oils ol which have .1 sufficient!) 

 distinctive odour. 



