9 
species of Apocynophyllum, resembling on the one hand A. Reinwardtianum, 
Goeppcrt, of the Tertiary Flora of Java; a species of Taberncemontana ; two 
species of Magnolia ; two species of Bombax, &c. Among these, however, 
there are no forms of specifically Australian character, which would appear to 
have retreated into the background altogether. A Pittosporum and a Euca- 
lyptus are the only plants of the kind. Excepting one single Proteacean, 
which corresponds to a New Zealand genus, the locality in question has so 
far furnished 7*4 per cent, of Australian types. This great difference between 
the Fossil Flora of Dalton and the present flora of Australia renders the 
supposition very probable, that between the two floras a long interval of the 
Tertiary Epoch intervened. This supposition is further specially strengthened 
by a comparison of the affinities of the species. We find in the Fossil Flora 
of Dalton three approaches to Cretaceous species, viz., through Quercus 
drimejoides to the Q.primordialis, Lesq., of the Cretaceous Flora of Nebraska ; 
through Fagus Wilkinsoni to the F. prisca, Ett., of the Fossil Flora of 
Niederschona ; and finally through Magnolia Brownii to the M. tenuifolia , 
Lesq., of the North American Cretaceous Flora. Two species, viz., Quercus 
Darwini and Castanopsis Benthami , are related to species of the British 
Eocene Flora. Besides this, species of the genera Artocarpidium, Eucalyptus, 
Dalbergia, and Cassia, are analogous to species belonging more particularly 
to the European Eocene Flora. For these reasons I regard the Fossil Flora 
of Dalton as Eocene. 
(b.) Tertiary Strata near Hobart, Tasmania. 
In the environs of Hobart are found extensive strata of yellowish, 
solid limestone (Travertin), in which now and then, sometimes often, fossil 
plants are embedded. Among the localities known are Risdon, Shocbridge’s 
Lime-kiln, Geilston, Pipeclay Bluff, Carnclian Bay, Sandy Bay, One-tree 
Point, and others, near the embouchure of the river Derwent. The geological 
relations of these strata have been carefully examined and described by 
Mr. R. M. Johnston, of Hobart, to whose writings I here refer.* In the 
# [The Geological Papers, by Mr. R. M. Johnston, referred to, are the following : — 
Regarding the Composition and Extent of certain Tertiary Beds in and around Launceston, Tasmania. 
Papers and Proc. P. Soc. Tas. for 1873, pp. 34—48. 
The Launceston Tertiary Basin ; Second Paper. Loc. cit. for 1874, pp. 53 — 62. 
Note on the Discovery of Spondylostrobns Smythii (Von Mueller), and other Fossil Fruits in the Deep Lead 
Drift at Brandy Creek Gold-field. Loc. cit. for 1879, p. 25. 
Notes on the Relations of the Yellow Limestone (Travertin), of Geilston Bay, with other Fluviatile and 
Lacustrine Deposits in Tasmania and Australia, &c. Loc. cit. for 1879, pp. 81-90. 
11a 67—88 D 
