Vll 



PREFACE. 



THE continual applications received by us, during the last few years, for 

 further data concerning the physical and chemical properties and commercial 

 possibilities of the oil products of the Eucalypts than those given in the 

 first edition, which has now been out of print for some time were the chief 

 incentives which moved us to place our latest researches on these wonderful 

 trees into the present book form. 



Tn tVip nrpviniis pHi+inn tVip cnpripe mr>rp i~>articularly investigated Were 



'ontinent, but since that 

 FRRATA species found in all the 



ge XV. CV. should read CX. L ' insure that th(J ^^ 



ge XV. CVIII. (first one) should read CVII. . ect ; and in order to 



Third line from bottom, Plates I., II, III. should read III., V., VI. .ual Species, material has 



ge 17. Line 30 from top, Plate ill. should read VI. -;hat commercial require- 



ite 18. Third line from bottom, Plates VI., VII., VIII. should read IX.. X., XI. 



ite^ig. Line 27 from top, Plates I. to VIII. should read III to XI. or investigation was no 



e 357- The word Deposit at end of list should be s me type as Paraffin, from ^ arx) ut I,OOO,OOO square 



which it is a distinct substance. iod that, With tWO or three 



jje 425. The sign missing in the centre of table before 1-2 is - (minus). Sydney under our own 



this way, well assured. 



___,_^ r distribution, frequently 



growing in localities difficult of access and far from rail and road com- 

 munication, and although expert collectors were employed for this work, yet 

 the difficulties of location were none the less in evidence. 



As illustrating this difficulty of collection in such sparsely settled 

 countries as Australia and Tasmania, Plate cxx is given. 



In the main the scheme of the original edition is again followed, 

 although, of course, much amplified in various directions, in agreement with 

 the many new discoveries and fresh facts brought to light during the last 

 twenty years. 



Where possible the data given in the first edition have been verified 

 and extended by further researches on new and larger quantities of material of 

 the same species, growing under varying climatic and geological conditions. 

 With one or two minor exceptions the chemical and botanical information 

 as previously recorded still stands, and is supported by these more extended 

 investigations. 



To every section has been added the accumulated results of our labours 

 in this direction, during past years, in the research laboratories of this 

 Institution. 



These results clearly show that in the Genus Eucalyptus, Australia has 

 a commercial Forest asset of so diversified and valuable a nature that it 

 has no compeer in any other genus in the whole botanical world. 



