580 JOURNAL OF SCIENCE. 
careful study before the Fellows could discuss it. He would have liked 
to have seen some of the specimens which were sent to Germany, 
because since Mr. Wajenknecht visited Bischoff more information had 
been obtained, not only of Bischoff itself, but of the country further 
south. ‘The specimens, too, ought to be considered in connection with 
the Meredith Range and Mount Heemskirk. He believed that some 
of the explanations of the German professor would throw a great deal 
of light on matters on which there had been great uncertainty, especially 
in regard to the green rock, which had always—he did not know why— 
been called chlorite. The professor said it owed its green colour to 
tourmaline. In confirmation of this tourmaline occured at Mount 
Heemskirk, in chlorite veins. which stuck up on the side of the 
mountain, being harder than the surrounding surfaces. It was curious 
that at Mount Heemskirk this green rock was found on one side of a 
vein, while on the other side was quartz rock with tourmaline in it. 
At Mount Ramsay and the Meredith Range they also found quartz rock 
full of tourmaline. When the quartz porphyry decomposed it became 
Kaolin, owing to the large percentage of felspar it contained, a 
specimen of which he produced. It would be interesting to have the 
paper referred to Mr. Kayser and other scientific gentlemen, with a 
request that they should make some remarks upon it. 
Mr. T. Stephens took the same view, and thought they should 
have further information about the specimens sent to Germany. There 
might have been mistakes which, though no one was to blame for them, 
might have led to misconception. It would, perhaps, be well to 
forward specimens of rock to which Mr. Sprent supposed the author to 
allude to Professor Liversidge, in Sydney, for his inspection. 
Mr. R. M. Johnston said the observations were well worthy of 
attention. The specimens might not be characteristic of the country 
generally, though found there. The topaz rocks were found in a dyke, 
or wall in the mountain. He thought the typical rocks asa whole 
should be sent to Professor Liversedge. 
The Chairman said Mr. Sprent’s suggestion was a valuable one, 
and he would, on behalf of the Cesineil, undertake that it should be 
carried into effect: 
(2) “General Observations regarding the Classification of the 
Upper Paleozoic and Mesozoic Rocks of Tasmania, together with a full 
description of all the known Tasmanian Coal Plants, including a 
considerable number of new species,” by R. M. Johnston, F.LS., &e., 
&c. The author deals with many important questions connected with 
the proper classification, and the true relations of the important series 
of rocks in Tasmania belonging to the upper paleeozoic and mesozoic age, 
which include the upper coal measures of the midland and south-eastern 
parts of the island as well as the lower coal measures, which are well 
represented in the vicinity, Latrobe, or the Mersey. Elaborate tables 
were prepared, showing the distribution of all the known coal plants of 
Tasmania, also of the fossils of the upper and lower marine beds. 
Sections were also prepared, showing the relations of the principal rock 
systems to each other; and the question of the probable age of the 
greenstone mountains and tiers was very thoroughly discussed, so far as 
it touched upon the relation with the stratified rocks with which the 
greenstone masses are so intimately associated, Mr. Johnstone gave 
