SCIENTIFIC SUMMARY. 
97 
Since that date, however, secondary fossils have been discovered by various 
geologists. Mr. Clarke’s enquiries extended over the country near the 
Maranoa river in Queensland, and the examination of specimens sent to him 
from localities between there and the Flinders river have led him to believe 
that there exist in that area various formations from the Triassic to the 
Cutaceous series. It seems that the deposits on the eastern and western 
sides of Australia are by no means identical. 
Figures of British Fossils. — Mr. W. Hellier Baily, Palaeontologist to the 
Irish Geological Survey, is issuing, or proposes to issue, in numbers, a series 
of lithographs, illustrative of characteristic fossils. The work will consist 
of tinted plates and explanations, but will be without letterpress. Those 
who are familiar with Mr. Baily’s untiring industry in the pursuit of palaeon- 
tology will know how to appreciate his new work. Each number will be 
published separately, will contain ten plates, and will be sold at the moderate 
price of five shillings. 
Flint Cores from India. — General Twemlow has sent over from India several 
specimens of the above, and with them a letter to the editor of the Geological 
Magazine , asking for a notice of them. Accordingly Mr. John Evans has 
examined them, and has offered his opinion upon them. They present the 
appearance of cylinders which have a polygonal outline, and are the remnants 
of flints from which flint weapons have been chopped off. It seldom happens, 
Mr. Evans states, that a single specimen of flint is of so pure and homoge- 
neous a character as to yield so many regular chips as those which Major- 
General Twemlow has sent over from the Indus. The statement of the 
discoverer that they were found in the bed of a river beneath three feet of 
rock, Mr. Evans receives with some doubt, and he considers the specimens to 
belong rather to what is called the Neolithic than the Palaeolithic period of 
India. 
Acalephce in a Fossil State. — Several very well preserved fossil remains of 
the Medusidse have been discovered in the lithographic slate of Eichstadt 
by Professor Iiackel, of Jena. The species more recently described by the 
German savant belong to the family Rliizostemidse, the typical genus of 
which is so frequently illustrated in zoological text-books. Professor 
Hackel’s restorations seem to have been conscientiously made, and there is 
every reason to think that ere long the study of fossil Medusidse may become 
an important branch of palaeontology. — Vide Geological Magazine, November. 
The Rocks of North Devon and Somerset. — Mr. G. J. Beete Jukes has 
published a paper on the grouping of these deposits. Mr. Jukes takes as 
his starting-point the country round Wiveliscombe, and describes the rocks 
of the district reaching from that place north-west to the Brendon ' Hills, 
and westward to Dulverton, including the valley of the Tone more to the 
south. He has arrived at the following conclusions : — ( 1 ) There are three 
areas of old red sandstone in this region, namely, a , the Quantock Hills j 
b, the Porlock, Minehead, and Dunster area 5 and c, the Morte Bay and 
Wiveliscombe ridge. (2) Each of these masses of old red sandstone dips 
under a great mass of carboniferous slate. (3) The coal-measures, the carbo- 
niferous slate, and the old red sandstone of Devon are contemporaneous with 
the coal-measures, carboniferous limestone, and the old red sandstone to the 
north of the Bristol Channel. 
