152 



The colours of the barks of all the smooth-barked trees vary according to the 

 season of the year; so that it would be well for the student of this most interesting 

 branch of dendrology to take into consideration the season or time of the year. To 

 get an accurate description of the bark it would be necessary to describe it soon after 

 it was shed, and again about one or two months after ; and a final description a short 

 period before the tree sheds its bark again. Half-barks should be followed up in a 

 similar manner. 



Compare the chapter on Barks in Part LI, pp. 19, 20, &c. 



173. E. accedens W. V. Fitzgerald. " Contains 18 per cent, tans." (H. Salt 

 Circular No. 8, Bureau of Science and Industry, 1922. Further notes from this Circular 

 will be quoted as " H. Salt."). The dendrological and sylvicultural records in the Circular 

 are by Mr. C. A. Gardner, through S. L. Kessell, Acting Conservator of Forests, Perth, 

 Western Australia. Compare Part LII, p. 101. 



26. E. acmenioides Schauer. Bark stringy, somewhat furrowed on old trees. 

 Upper Clarence River (W. F. Blakely). 



136. E. alba Reinw. " Its distinguishing character is the great width of the 

 leaves and the conspicuous cream-coloured smooth bark. Unlike most of the gum 

 trees the bark of which does not split, the deciduous portions soon fall off, so that there 

 are none of those strips and ribbons or dark crests of bark which are so characteristic 

 of the Australian bush. The bark is smooth or slightly wrinkled, and of bright colour." 

 North Queensland (Rev. J. E. Tenison-Woods, Proc. Linn. Soc, N.S.W., vii, 332, as 

 E. platyphylla) . " Greyish to reddish, thin, decorticating in strips, leaving the trunk 

 and branches smooth and cream-coloured." (W. V. Fitzgerald, Kirnberleys, as 

 E. platyphylla.) 



" Smooth, pinkish or almost white, decorticating in large grey flakes." (C. A. 

 Gardner, Kirnberleys, as E. alba.) 



" Contains from 30 to 32 per cent. tans. This is the Ridge Gum of the Kirnberleys, called the River 

 Gum in Java, and the Mountain Gum (sic.) in Queensland. It grows to 35 feet, and the bark is about 

 J-inch thick, white outside and pink inside. The tannins present are readily soluble in water, arid mostly 

 at a temperature below 50 degrees C. . . . The Department of the North-west is using this bark at 

 the Aborigines' Station at Noola Bulla, 270 miles south of Wyndham, and though the apparatus is primitive, 

 and the labour mostly native labour, they have turned out excellent leather of a good colour and substance. 

 The quantity of bark available can be said to be unlimited, and the stripping is easy. Besides the value 

 of this bark for export, or for extract manufacture, the supply of cheap hides in the Kirnberleys offers an 

 opportunity of establishing a tannery in or near the source of the Ridge Gum supplies." (H. Salt.) 



" Khaki-coloured bark." (C. E. F. Allen, Katherine River, Northern Territory). 



136. E. alba. " This tree is readily distinguished in the field by its clean white 

 trunk and branches." (C. T. White, Port Moresby, Papua.) 



181. E. argillacea W. V. Fitzgerald. "Dark grey, persistent on trunk and 

 branches, similar to that of E. amygdalina, ' Peppermint.' ' (W. V. Fitzgerald MSS.) 



