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Acknowledgments. 



I have already referred to the way in which this work has been written — records of facts have been 

 made simultaneously with an appeal for additional facts, in other words, the whole of the facts submitted 

 were not available when publication began. 



First of all, the help that I have received from Miss Margaret Flockton, the artist of this work, is 

 immense, and it speaks for itself. She is practically a joint author. Her drawings are alike beautiful 

 and artistic, and the botanist will appreciate them because of their fidelity to nature. As knowledge 

 progressed, and perhaps long after a loan specimen had been returned to its owner, the faithfulness of the 

 drawing sometimes brought out a hitherto unsuspected point. I have reproduced specimens of the fine 

 series of coloured drawings of seedlings at different stages, on which she has been engaged for over twenty 

 years, and the work of Miss Ethel King and Miss Phyllis Clarke on the same series, though very much 

 less in extent, is worthy of the greatest praise. 



Mr. "William Faris Blakely, in addition to his other duties, has been my assistant for Eucalyptus 

 since 1913, and has given me increasing help since that date, so that he has been quite indispensable to 

 me. In return, I have instructed him in the subject to the best of my ability. Without for a moment 

 presuming to dictate his future course of action, I hand over the unrivalled Eucalyptus collection of the 

 National Herbarium to him, in a special sense, for he is acquainted with it as no one else is, and he is 

 entirely competent. I am confident that he will successfully add to, in his own way, the Eucalyptus work 

 carried on by me at the National Herbarium for nearly thirty years, and at the Technological Museum 

 for ten years before that. 



I never forget the early pioneering work that my old colleague, Mr. Henry Deane, M.A., and I 

 undertook in the eighties and nineties, and some of this work is commemorated by species and varieties 

 which bear our joint names. 



I do not think that a single Part has been published which does not show my indebtedness to 

 Mr. R. H. f'ambage. No botanist has helped me so much as he, not only with critical specimens and 

 valuable notes, but many observations are the result of consultations at various times with this 

 valued colleague, whose knowledge of the genus is profound. This can be seen in part from the quotations 

 I have so freely made from his works. It would be simply impossible to fully state my indebtedness to 

 him. A bibliography of his Eucalyptus work will be found in another place. 



I most gratefully do acknowledge the assistance of Dr. T. L. Bancroft, of Eidsvold, Queensland, 

 who has supplied me for many years with herbarium specimens, heavy axe-cuts of bark and timber, photo- 

 graphs or negatives or both, and valuable notes — all illustrative and to the point. No man could have 

 a more responsible and unselfish correspondent than he, who is well known to zoologists and physiologists 

 also as one who delights in supplying material to facilitate the studies of others, even if they interrupt his 

 own. 



Professor J. P. Cleland has been a similarly unselfish collector of the same type, and it is a great 

 pleasure to acknowledge his kind assistance. 



For specimens and notes which have enabled me to clear up many points in regard to Northern 

 Territory species, I am indebted to Dr. H. I. Jensen, Messrs. Charles Ernest Frederick Allen and Gerald 

 Freer Hill. These gentlemen have travelled great distances over difficult country and have always been 

 patient in replying to my inquiries. Dr. Jensen's work on the geological formations on which various 

 Eucalypts are found is largely of a pioneering character, and will be found to be freely quoted in Part LNVII. 



From the Forestry authorities, particularly of Western Australia and my own State, I received 



active support. As regards the former State, Australian forestry and botany both deplored the transfer 



of Mr. C. E. Lane-Poole, the Conservator of Forests, who, recognising the fact that sound forestry practice 



cannot exist without a sound knowledge of the taxonomy, morphology and ecology of Eucalyptus, helped 



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