Reviews — R. Etheridge,jun., Palceozoic Corals. 177 



IV. — Thk Lower Paleozoic Corals of Chillagoe and Clermont. 

 Part I. Ey P. Etheridge, jun. Queensland Geological Survey, 

 Publication 231. pp. 8; plates A-D. Brisbane, 1911. 



OP the five new corals that are described by Mr. Etheridge from the 

 Lower Palgeozoic of Chillagoe and Clermont, three are referred to 

 the %eTLVi?,Cyat]iophyUum and two to Spongophyllum. C. Dunstani, n.sp., 

 from Clermont, is related to two Devonian species of Europe and 

 America — C. quadngeminum, Goldfuss, and G. hexagonum, Goldfuss. 



C. (?) clermontensis, n.sp., also from Clermont, is related to the 

 Devonian species C. (?) helianthoides, Goldfuss, and C. (?) damnonietise, 

 Goldfuss. 



C. cMllagoensis, n.sp., from Chillagoe, shows points of resemblance to 

 and difference from C. hypocrateriforme, Goldfuss. 



SpongopJiyllum cyathophylloides, n.sp., from Clermont, is compared 

 with S. hipartitimi, Etheridge, Jun., from the Upper Silurian rocks of 

 Yass, New South Wales ; and Spongophyllum sp., a new form from 

 Chillagoe, is distinguished from S. cyathophylloides \)j a limited number 

 of septa and copious endothecal tissue. 



The presence of the genus Holy sites shows the Chillagoe Limestones 

 to be of Silurian age, but that of the Clermont Limestone has yet to 

 be determined. 



Y. — The Geology oe Knapdale, Jura, and North Kintyre. By 

 B. N. Peach, the late J. S. G. Wilson, J. B. Hill, E. B. Bailey, 

 and G. W. Grabham : with notes by C. T. Clough, S. B. 

 Wilkinson, W. B. Wright, and H. B. Mauee ; and petrological 

 descriptions by J. S. Flett. 8vo ; pp. viii, 149, with 8 text- 

 illustrations and 7 plates. 1911. Price 4s, %d. 



THIS memoir is an explanation of the Scottish Geological Survey 

 Sheet 28, with parts of 27 and 29. Sheet 28, now issued (at the 

 price of 2s. 6<?.), is admirably colour-printed, and although it does 

 not contain the whole of Jura, that island is fully described in the 

 memoir without regard to the limits of the map. 



Apart from the Glacial Drifts, the Paised Beaches, Alluvium and 

 Peat, the area consists of Metamorphic Pocks (Dalradian), inter- 

 sected by igneous dykes and some sills, the ages of which are 

 doubtfully given as Old Red Sandstone, Permo-Carboniferous, and 

 Tertiary. 



Jura with its ' Paps ', which rise to an elevation of more than 

 2,400 feet, is composed mainly of white quartzite. It is not a very 

 hospitable - looking area, judging by the coast-views with raised 

 beaches, but appears more attractive in the view of Dolerite dykes 

 (plate vi). 



The mainland is more varied in its geology, and consists of limestone, 

 quartzite, clay-slate, and altered igneous rocks or ' epidiorites ', 

 which are folded together so that the outcrops of each run in long 

 narrow strips directed mainly to the north-east. The numerous 

 inlets by which the sea penetrates far inland (Loch Sween, Loch 

 Tarbert, etc.) have the same trend as the rock outcrops, and are old 

 land valleys which have been drowned by submergence. Around 



decade v. — VOL. IX. — NO. IV. ' 12 



