— 39 — 



For the same reason only ozonised oils should be used for the 

 production of eucalyptol, in order to obtain in this manner also an 

 active eucalyptol. The ozone once present in the eucalyptol, is not 

 abstracted from the latter (?) by the method of manufacture (freezing 

 out or rectification). 



Finally Hall discusses briefly the pharmacology of eucalyptus oils, 

 where he again lays stress on the importance of the ozone-content. 



Eucalyptus oil is frequently used with advantage both externally 

 and internally. It is said to render good services as an inhalation 

 remedy in diphtheria, scarlet-fever, whooping-cough, bronchial catarrh, 

 pneumonia, and influenza. In the form of an embrocation it is useful 

 in rheumatism, and it is also employed in gonorrhoea and leucorrhcea. 

 But the action against cancer which has been ascribed to it, has not 

 been confirmed. 



The internal administration of eucalyptus oil takes place either per 

 os, or hypodermically; in the latter case, olive oil and glycerin are 

 used as diluents. When employed hypodermically, it has had an ab- 

 solutely specific action in several cases of pysemia, puerperal fever, and 

 septicaemia; equally favourable results have been observed in erysipelas. 

 In every case it simultaneously lowers the temperature. 



Administered per os it is said to be successful in bronchitis, phthisis, 

 and scarlet fever; in typhus Hall has also tried the oil, and, according 

 to the results obtained up to the present, it appears to be useful also 

 in such cases. That the oil or leaves of eucalyptus are largely used 

 against malaria is well known. We would still mention that an infusion 

 of the leaves of Eucalyptus globulus is said to be very active in diabetes, 

 whilst the corresponding oil produces no effect. 



Eucalyptol is probably free from toxic action, as in doses of iogm. 

 daily of an oil rich in eucalyptol, no disturbances worth mentioning 

 have been observed. 



As a continuation of the excellent monograph of the eucalyptus 

 published by J. H. Maiden, of which we discussed the first 3 parts 

 in our Report of October 1903 (p. 38), the 4 th part has now made 

 its appearance 1 ). In this part, Eucalyptus incrassata Labillardiere 

 and E. foecunda Schauer are described. As a typical form of the 

 first-named, E. dumosa A. Cunn. var. scyphoralyx F. v. M. is indicated. 

 The following varieties are also mentioned: var. dumosa F. v. M. (syno- 

 nyms: E. dumosa A. Cunn., possibly with var. punctilulata Benth. and 

 var. rhodophloia Benth., E. lamprocarpa F. v. M., E. Muelleri Miq., 

 E. glomerata Tausch). Var. conglobata R. Br. (Synonyma: E. conglobata 

 R. Br., E. anceps R.Br., E. pachyphylla F. v. M.). Var. angulosa Benth. 



1 ) A critical revision of the genus Eucalyptus, Part IV, Sydney, 1904. 



