ON FUEL ECONOMY. 201 



(semi-coke or coke). There can be no doubt but that if such a sub- 

 stitution could be effected, without either increasing the domestic coal 

 bill or involving some other disadvantage, not only would there be a 

 great addition to the amount of valuable by-products annually obtained 

 from coal consumed in the Kingdom, but also the smoke nuisance in 

 our large centres of population would be materially reduced. 



Work on these lines is being carried out in the Department of Heat- 

 ing and Ventilating Engineering at the University College, London, at 

 the Municipal School of Technology, Manchester, and at the Depart- 

 ment of Chemical Technology at the Imperial College of Science and 

 Technology, London. 



The Botanical and Chemical Characters of the Eucahjpts and 

 their Correlation. — Second Report of the Committee, con- 

 sisting of Professor H. E. Armstrong (Chairman), Mr. 

 H. G. Smith (Secretary), Mr. E. C. Andrews, Mr. E. T. 

 Baker, Professor F. O. Bower, Mr. E. H. Cambage, 

 Professors A. J. Ewart and C. E. Fawsitt, Dr. Heber 

 Green, Dr. Cuthbert Hall, Mr. J. McLuckie, Professors 

 Orme Masson, E. H. Eennie, and E. Eobinson, and 

 Mr. P. E. H. St. John. 



[Plate II.] 



DuBiNG the year the Committee has held three meetings in Sydney, 

 at which methods of procedure and results were discussed. 



Mr. John McLuckie, M.A., B.Sc, of the Botanical Department, 

 Sydney University, was added to the Committee. 



Much of the official year had passed away before the Committee 

 in Australia knew that its first Eeport had been accepted for printing 

 and that the Committee had been reappointed with a grant of £30. 



The serious drain on the young Australian scientists caused by the 

 war has also been a factor in preventing the completion of certain 

 work which it is considered desirable should be undertaken, so that 

 no claim is made in the present Eepoi-t upon the grant. The Committ-«e 

 ask to be reappointed, and that at least the sum allocated to them lant 

 year may again be placed at their disposal. 



Work has been done during the year on 



(a) the phenols in Eucalyptus oils ; 



(b) the variation in the amounts of the constituents of Eucalyptus 



oils; 



(c) Eucalyptus Australiana and its peculiarities. 



(a) The Phenols in Eucalyptus Oils. 



In the first Report it was stated that two distinct phenols were 

 present in Eucalyptus oils (No. 10 in previous Bibliography), though 

 only in very small quantities. 



One of these phenols, Tasmanol, has now been isolated from the 



