348 
of various ages. Much evidence was also collected in reference to the rapid growth of 
this species, and photographs are given to illustrate this. 
Smith, H. G., and Baker, R. T. " Eucalyptus australiana sp. nov. (Narrow- 
leaved Peppermint) and its Essential Oil." Proc. Roy. Soc. N.S.W., xlix, 514. This 
paper gives the results obtained with the oil of this species, distilled from material 
growing in the Nerrigundah and Yowrie districts of New South Wales. The method 
of fractional separation of the oil during periods of time is now commercially adopted 
with this species. The product of the first hour is an excellent pharmaceutical 
Eucalyptus oil. 
1916. "A Research on the Eucalypts of South Australia and their Essential 
Oils." Trans. Roy. Soc. South Australia, xl, 464, with four plates. 
1917. Maiden, J. H. " Notes on some South Australian Eucalypts," ib.. 
xli, 333. A criticism of some of the nomenclature adopted in the preceding paper. 
1919. Greig Smith, R., D.Sc. (Macleay Bacteriologist to the Linnean Society 
of New South Wales.) " The germicidal activity of the Eucalyptus Oils." Part I. 
Proc. Linn. Soc. N.S.W., xliv, 72. 
" When a serum-suspension of Micrococcus aureus was absorbed in cotton and 
placed in dilutions of the Eucalyptus oils in olive oil for two hours at 20 degrees, it 
was found that the bactericidal power was proportional to the acidity of the oils. 
The germicidal effect was not caused by the acidity, but was assisted by it. 
The effect upon B. coli communis was of much the same nature, although the 
action of the acid was not so clearly shown. 
The iodide reaction was no criterion as to the germicidal value of the oils. 
The vapours of the oils had a decided bactericidal action." 
Part 2. ' The action of the oils in aqueous solutions." Proc. Linn. Soc. N.S.W., 
xliv, 311 (1919). 
A summary of the results is given at p. 346, but they cannot be usefully 
abstracted at this place. He not only tested the oils, but also some of their constituents 
(p. 333). The oils dealt with are E. cinerea, E. Smithii, E. cneorifolia, E. fruticetorum 
(polybractea), E. radiata (australiana). 
Wiadrowski, H. J. "Erecting a Eucalyptus Oil Distillery." Journ. Dept. 
Agric. South Australia, 22, 1033-4. July, 1919. 
1920-An informative article on the firms actually distilling Eucalyptus oil in 
Australia, and their products, will be found in Chem. and Drugg. Aust., February, 1920, 
Perez, G. V. " Eucalyptus and Diabetes " Medical Press and Circular, New 
Series, cxiv, No. 5211, January, 1920, p. 52. 
