40 Revieics — Geological Sfnicture of Wedern Cornwall. 



The newer 'Valley Grravel' is duly described, and, among other 

 points of interest, attention is directed to the cones or fans of chalk- 

 rubble and rubbly gravel which occur at the mouths of the combes in 

 the neighbourhood of Henley. 



The Geological Survey is to be congratulated on having obtained 

 the services of Mr. Osborne White in the description of the later 

 deposits in the area to which this memoir refers. 



VI. — The Geologicil Structdee of Western- Cornwall. By Upfield 



Green, F.G.S. 8vo. Penzance, jS'ovember, 1908. In advance 



from the 95th Keport of the Royal Geological Society of Cornwall. 



Price \s. 



'IIHE author's views as to the age of the rocks in Western Cornwall 



JL have been public property since his paper appeared in the 



Geological Magazine for August, 1904. In this pamphlet he gives 



the sequence of the beds, as he believes it, in detail, and contrasts it 



with that of the Geological Survey, who regard the beds between the 



known Devonian on the north and the south coast as Ordovician or 



Cambrian, although some of these beds have been shown to contain 



lenticles of Upper Silurian limestones. Mr. Green regards them all 



as Gedinnian, and gives a sketch-map and section in support of his 



views. He appears to suggest (on p. 2) that the published one-inch 



maps issued by the Survey do not agree with, and are not so accurate 



as, the sis-inch maps on which the mapping was done. He promises 



further papers on the subject. 



VII. — Brief K'otices. 

 1. Bkitisu: Jurassic Echinoids. — The last number of the Proceedings 

 of the Cotteswold JTaturalists' Field Club (vol. xvi, pt. ii) contains 

 " Xotes on some Echinoids from the Lias of Worcestershire, Gloucester- 

 shire, and Somerset", by E. Talbot Paris, who has also contributed 

 the systematic notes and descriptions to the following paper, " On the 

 Stratigraphical and Geographical Distribution of the Inferior Oolite 

 Echinoids of the West of England," by L. Bichardson and E. Talbot 

 Paris. The latter paper should be of particular service to those 

 working on that wonderfully rich and condensed series of rocks known 

 as the Inferior Oolite ; it contains interesting remarks on distribution, 

 migration, and parallel development. Mr. Paris must be welcomed as 

 a new student in this field, and one who seems inclined to work on 

 correct lines. In the arrangement of his matter the influence of 

 Mr. Richardson is obvious, and we wonder sometimes that it was not 

 carried a little further. In turning out new species Mr. Paris is 

 a little rash ; many are based on unique specimens, and when this 

 is not the case a holotype (as Mr. Richardson would probably call it) 

 is not selected. The new species Biademopsis hettmigicnsis is not 

 figured, nor is it compared with the many other Hettangian species 

 previously referred to that genus. Mr. Paris refers Hemipedina 

 Etheridgei to Diademopsis, forgetting that it is the type species of 

 Hemipedina. He states that in H. perforata there are only granules 

 between the main interambulacral tubercles, but does not give his 



