xiv PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 
and English tertiaries was restored, and that this connection was pro- 
bably in part prolonged until the completion of the Isle of Wight 
series, the London district assummg a more isolated form, and 
emerging sooner from the sea. 
With respect to the movements which the land may have sustained 
at this period, it should not be forgotten that the tertiary deposits 
which may have been affected by them were once more extensive 
than we now find them in mass, traces of their former existence 
not only remaining between the London and Hampshire districts, 
but also far to the westward. Indeed the extensive denudations 
which have been effected westward since the great bend of beds took 
place which can be traced across the Weald of Sussex ito Somerset- 
shire, and of which the great bulge of the Wealden rocks exposed in 
the former is but a part, leave it very doubtful how far in that di- 
rection these tertiary beds may have once been formed. This great 
anticlinal bend runs parallel with that of the Isle of Wight, and 
both probably belong to the same exertion of force, one showing a 
repetition of east and west anticlinal lines of a different geological 
date from those which have affected the coal-measures, carboniferous 
limestone and old red sandstone of the Mendip Hills in Somerset- — 
shire, the east and west anticlinal and synclinal lmes in which are 
shown to have been produced anterior to the deposit of the new red 
sandstone and oolites, since these accumulations rest unconformably 
upon the denuded edges of the beds which have been thus disturbed. 
In his ‘ Notes on the Geology of the Coasts of Australia,’ wherem 
he adds to the information and descriptions of others, his own obser- 
vations, made while attached as naturalist to the surveying voyage of 
H.M.S. Fly, Mr. Beete Jukes speculates on the past geological 
history of that remarkable land. Without claiming novelty for the 
view, he points out the absence, as far as is yet known, of rocks ac- 
cumulated in geological time intermediate between the palzeozoic and 
tertiary periods, as also the occurrence of marsupial animals, shells 
such as the Trigonia, and plants like the Zamia, existing Australian 
forms, in the oolitic series of Europe. ‘If,’ he observes, “at the 
close of the paleeozoic period Australia had been elevated above the 
sea, so as to have been dry land during the oolitic era, and never 
since had been wholly submerged, marsupial animals and certain plants 
may have inhabited the dry land, and Trigonia and other forms of 
marine life have resided in the surrounding littoral zones of sea up to 
the present day, however the species may have died out.’ The effects 
of submergence of the old land and its denudation are also pointed 
out. Mr. Beete Jukes supposes that durig the tertiary time four 
groups of islands would be formed, one running along the present high 
land of the eastern coast, to which others, due to voleanie action at 
the time, might be added. A second island would coincide with the 
range of high ground in South Australia, a third with the hilly 
country of Western Australia, and afourth with the part of the north 
coast ranging between Buccaneers’ Archipelago and the Gulf of Car- 
pentaria. He considers that in these islands, or groups of islands, 
certain animals and plants might die out and be replaced by others 
