THE GEELONG NATURALIST. 47 
The experiment was eminently satisfactory, and the professor 
received the best thanks of the Greek Government for having 
thus successfully and scientifically got rid of a pest that had 
inyested Thessaly for hundreds of years. 
That these results should be of great value to us Australians 
cannot be doubted. The experiments conducted here for getting 
rid of the rabbits by a similar method, indeed, proved failures, 
and, in fact, these very failures prejudiced many scientists 
against the professor’s experiment in Thessaly; nevertheless, 
itis not conclusive argument that the rabbits may not ulti- 
mately be destroyed by some bacillus easily administered, and 
one that will be harmless to other animals. Let us, at any 
rate, hope that such a discovery will shortly be made and 
practically applied. 
THE GLACIAL DEPOSITS OF VICTORIA. 
In our last issue we published some notes on the glacial 
conglomerates near Heathcote, Victoria. In connection with 
this subject the Department of Mines has just published the 
departmental notes on the same conglomerates. Mr. E. J. 
Dunn, F.G.S., has been engaged, for some considerable time, 
investigating and mapping out these deposits, and the results 
of his observations are interesting. 
The conglomerate extends for a distance of about 154 miles, 
in a northerly direction, from where it emerges from under the 
basalt near Mia Mia, through Heathcote and the adjacent 
parishes. It varies in width, being five miles across, at one 
place, and covers, in all, about 355 square miles. The total 
thickness of the deposit may be about 300 or 400 feet. The 
conglomerate occupies an old trough or valley in the lower 
silurian rocks, which everywhere underlie it. However, among 
the boulders and pebbles of the conglomerate can be recognised 
the detritus of Devonian beds, such as occur in Gippsland ; 
therefore, the deposits must be newer than Devonian. The 
conglomerate is overlaid by tertiary rocks of pliocene age. 
From this evidence it is difficult to say whether the deposit is 
of mesozoic or of paleozoic age. In our last number the infer- 
ence is drawn from the same evidence considered in relation to 
the Bacchus Marsh beds—that the Heathcote conglomerate is, 
probably, of mesozoic age. Mr. Dunn, however, is inclined to 
the view that they are palmozoic. But whether mesozoic or 
paleozoic, the fact appears that the conglomerate is newer than 
Devonian and older than the Victorian coal-bearing formations. 
Mr. Dunn describes the character and constituents of the 
formation. The indiscriminate manner of the deposit, the 
angular fragments, the varying sizes, the binding clay, the 
