85 



description if taken with special reference to similar for- 

 mations of vast extent in Victoria and Tasmania. Take, for 

 example, tlie following description of one single local deposit 

 (the Launceston Tertiary Basin) given by me in a former 

 paper : — 



" The height of the remains of the original strata of this 

 system indicates that the lake must have stretched over a 

 very wide expanse of country in the direction of the existing 

 valleys and plains, and its extent must have been not less 

 than 600 square miles. The denudation which has taken 



pla.ce subsequently has been very great It is no 



exaggeration to say that 15 to 20 miles of strata, one-half to 

 two miles broad, and 400 to 500 feet thick, have been swept 

 away from the immediate vicinity of Launceston alone." 



Upon pal£Eontological grounds, as well as upon other 

 imi3ortant evidences, I am of opinion that the so-called "deep 

 leads" of Beaconsfield (Brandy Creek), referred to in a 

 former paper, are members of the Launceston Tertiary Basin, 

 and upon considerations of a similar character I think there 

 is nov/ little room for doubt but that the auriferous and 

 associated drifts at Hp.ddon, Ballarat, Bacchus Marsh, Tangil 

 River, Daylesford, Werribee, Beechworth, Gulgong, Orange 

 River, Richmond River, Diirling Downs, &c., &c., are of the 

 same age. In Tasmania, for similar reasons, I would include 

 the leaf beds of Macquarie Harbour, referred to by Mr. 

 Gould, and the freshwater Hmestone of Geilston Bay, and 

 vicinity of Trinity Hill, Hobart Town. 



The characteristic genera are common to all the beds 

 named, viz., Laurus, Penteime, Conchotheca, Flatycoila, 

 Sjpondijlostrohus. 



Remains of Spondylostrohus Smythii, F.v.M., foliage fruit, 

 or woody tissue, are found abundant in the various drifts in 

 New South Wales, Victoria, and Tasmania, particularly at 

 Haddon, Orange River, Beaconsfield, and Breadalbane. 



Coiicliotheca turgida, F.v.M., has a still wider range, as it 

 is also found on the Darling Downs, Queensland, and Mr. 

 Brough Smythe adds " probably in drift underlying volcanic 

 rocks." 



Flatycoila Sidlivani, F.v.M., is the most abundant fruit in 

 the deep leads at Beaconsfield. It is also most plentiful in 

 the Haddon leads, and I think I have traced casts of it in 

 the travertin. Certain seeds figured by Mr. Morton Allport 

 approach it very closely. The genus Penteime is common 

 to the beds at Beechworth, Victoria, and the travertin, 

 Hobart Town. 



Penteime Allporti, F.v.M., of the travertin, approaches yqyj 

 close to P. Clarkei, F.v.M., of Beechworth. 



Araucaria Johnstoniij F.v.M. Cone nearly perfect, asso- 



