250 



This is the best summary to date, and the author divides them into four classes. 

 Class I are all members of the Renantherae; Class II contains a number of the Boxes, 

 with some others ; Class III form tinctures which do not gelatinise. They mainly belong 

 to the Corymbosae, but some of the intermediate forms present classificatory difficulties. 

 Class IV consists of kinos distinguished by their ready solubility in water and slight 

 solubility in alcohol. Some of the members are Ironbarks and Mahoganies. 



" Eudesmin and its Derivatives, Part I," Journ. Roy. Soc. N.S.W., December, 

 1914. The object of this research was to determine the constitution of Eudesmin, one 

 of the crystalline bodies occurring in the kinos or exudations of some Eucalyptus 

 species. Descriptions are given of the formation and analyses of dinitroeudesmin, 

 dinitroveratrol, dichlor, dibrom and diiodo eudesmins. The molecule was shown to 

 contain two veratrol nuclei. 



A further, but a briefer, summary on Kinos or Astringent Exudations will be 

 found, by Messrs. Baker and Smith, in Rep. Brit. Ass., 1915. 



Analyses of Kinos for tannins by J. C. Brunnich will be found in the Report of 

 the Director of Forests for 1918 in Annual Report of the Department of Public Lands, 

 Queensland, p. 60. 



See also " A gum (Levan) Bacterium from a Saccharine Exudate of Eucalyptus 

 Stuartiana " (Bacterium Eucalyptii, n.sp.), by R. Greig Smith, in Proc. Linn. Soc. 

 N.S.W., xxvii, p. 230 (1902). 



It is worthy of note that some timbers (e.g., Blackbutt, E. pilularis) are, in 

 experienced hands, diagnosed by the (usual) presence of narrow concentric gum (kino) 

 veins. When these gum-veins are absent, the timber displays considerable resemblance 

 to that of E. microcorys (Tallow- wood), for which it is sometimes substituted. 



b. MANNAS. 



I have dealt with this subject at considerable length in Part LXIII of my 

 " Forest Flora of New South Wales," pages 101 to 119, to which I refer my readers. 

 There is an excellent article on*" The Manna of Scripture " by E. M. Holmes in the 

 " Chemist and Druggist " for 3rd January, 1920, which I received some months after 

 my article referred to above had been written. 



With reference to the list of Eucalyptus species at p. 103 of my own paper, I 

 collected manna on the edges of the leaves and young shoots of E. radiata at Blackheath, 

 N.S.W., in March, 1920. 



The following is an early re;ord (1815) of Manna in Australia. For one dated 

 1808, see my " Forest Flora of New South Wales," Part LXIII. p. 107- 



