— 30 — 



Estragon Oil. Our stock is very nearly exhausted, only a very 

 small quantity being in hand; but the herb planted out in our fields 

 here will enable us to distil a large quantity of oil during the coming 

 season. 



Eucalyptus Oil. Our sales of the distillate of the Globulus 

 species have last year acquired very large dimensions. The required 

 quantity was supplied chiefly by Australia, Algeria only supplying a 

 small portion. No alterations in the price can be recorded. 



Since our last Report we also received a direct consignment of 

 oil of Eucalyptus maculata var. citriodora, which had long been absent, 

 and which has now again been included in our lists. The oil owes 

 its beautiful balmlike odour to its principal constituent, citronellal. 



According to comparative tests made by R. C. Jackson 1 ) with 

 regard to the distillation of the oils of Eucalyptus oleosa and Euca- 

 lyptus Globulus , the leaves of the second year's growth of E. oleosa 

 contain the largest quantity of oil; next in order come those of the 

 second year of E. Globulus, then those of the first year of E. oleosa, 

 and finally those of the first year's growth of E. Globulus. Phellan- 

 drene could only be detected in the oil of E. oleosa. 



According to Jackson, the Smithson Development Co. of San 

 Rafael, Cal., works up daily 8 tons eucalyptus leaves, which are 

 distilled with steam under pressure. 



Baker and Smith 2 ), who have already supplied many contributions 

 to the chapter of Eucalypts, again give information on several West- 

 Australian species. We only deal with this work in so far as it affects 

 the essential oils, and would refer to the original for the botanical 

 description of the various species. 



We would make the preliminary remark, that Baker and Smith 

 here again lay stress on the close relations which in their opinion 

 exist between the botanical character of the eucalyptus species, and 

 the chemical constituents of the essential oils contained in them. They 

 specially return to this point, because the statement made by them 

 several years ago in another place 3 ) that the oil of E. calophylla, 

 according to the nervature of the leaf, should contain much pinene 

 and no phellandrene, has been confirmed by the examination now made. 



i. Oil of Eucalyptus calophylla R. Br. (Red Gum). The oil, ob- 

 tained in a yield of 0,248 °/ , had a dark-red colour and a turpentine- 



*) Amer. Soap Journ. 16 (1905), 74. Accord, to Chem. Ztg. Repert. 30 

 (1906), 37. 



2 ) Pharm. Journal 75 (1905), 356, 382. 



3 ) Journ. and Proceed, of the Royal Soc. of N. S. W. vol. 35 (190 1). Report 

 April 1902, 41. 



