11 
While this work is passing through the press, I have 
received Massee’s “ Text-hook of Plant Diseases caused by 
Cryptogamic Parasites” (Duckworth and Co., London),which 
not only treats of citrus diseases but of the principal diseases 
to which cultivated plants are subject, and it ought to be in 
the hands of every grower. 
I have to thank officers in the other colonies for kindly 
providing me with any specimens required for investigation, 
and among these may be mentioned Mr. Bailey, Colonial 
Botanist, and Mr. Tryon, Government Entomologist, of 
Queensland ; Mr. Maiden, Government Botanist, of New 
South Wales ; Mr. W. S. Campbell, of the Agricultural 
Department there ; Messrs. Quinn and Molineux, of South 
Australia; and Messrs. Helms and Despeissis, of West 
Australia. 
My assistant, Mr. G. H. Robinson, has supplied the two 
photo-micrographs reproduced, and Mr. C. C. Brittlebank 
has made the coloured drawings from nature, which show 
the principal diseases in such a striking manner that no one 
can fail to recognise them when met with. 
November, 1899. 
* 
