Revieivs — Memoirs of Geological Siirvei/. 525 



A long interval may well have elapsed between the resurvey 

 of the area and the publication of this Explanation, for we do not 

 find any reference to the wonderful discovery by Dr. G. J, Hiude and 

 Mr. Howard Fox ^ of Radiolarian rocks in the Lower Culm-measures, 

 which embrace a large extent of the Exeter area, dealt with in this 

 Memoir, although the paper was read before the Geological Society 

 in June, 1895. 



Palasontological evidence has been of late shown to be as important 

 as ever to the stratigraphical geologist, and no ' Royal Hammerer ' 

 can afford to neglect it if he values his reputation for ' up-to-dateness.' 



3, Thb^ Geology of the Country around Eingwood 

 (Explanation of Sheet 314). By Clement Eeid, F.E.S. ; with 

 contributions by F. J. Bennett, F.G.S., and E. E. L. Dixon, 

 B.Sc, F.G.S. 8vo ; pp. 62, with 4 Illustrations in text. 

 (1902. Price Is. Price of Sheet 314 and a colour- printed map 

 of the Eingwood district, Is. 6d.) 



[T would be an excellent plan if with every Memoir published by 

 the Survey the colour-printed map or sheet belonging to the 

 Explanation were (as in this instance) found folded up inside 

 the cover. It would add enormously to its worth. 



A description is given in this Memoir of the north-west portion 

 of the Hampshire Basin, including the fine range of Chalk hills 

 bordering Cranborne Chase on the north-west, and a part of the 

 picturesque woodland of the New Forest, formed of Tertiary strata, 

 on the south-east. 



Attention is called to the evidence of an old river-course, which, 

 probably in Newer Pliocene times, connected the Salisbury rivers 

 with Southampton. On p. 34 is given an explanation aided by 

 a very useful diagram of the Eiver Valley Terraces of the Avon, 

 from 100 to 400 feet above sea-level, which Mr. Clement Eeid divides 

 into — (a) Pliocene (high plateau), 400 feet; (&) Early Glacial; 

 (c) Eolithic (second terrace) ; (d) Palteolithic (first terrace) ; (e) Late 

 Glacial (valley gravel) ; (/) Alluvium (100 feet), down to the 

 present river channel. 



Well-sections are given in an Appendix. 



The map, which has been executed at the Ordnance Survey OfS.ce, 

 is clearly and well printed on a scale of one inch to the mile ; the 

 names and boundaries are very legible and distinct, and the colours 

 pleasing to the eye. The Geological Survey is certainly to be 

 congratulated on the introduction of colour-printed one-inch maps. 



4. Summary of Progress of the Geological Survey of the 

 United Kingdom and of the Museum of Practical 

 Geology for 1901. 8vo ; pp. 220, with 7 Illustrations. 

 (London, 1902. Price Is.) 



SAVE in the margin, there is no author's name to this work. The 

 whole represents the Director's Eeport for the year 1901, and 

 should have borne his name on the title-page, as the responsibility 

 for it rests upon his shoulders. 



1 See Quart. Joum. Geol. Soc, vol. li (1895), pp. 609-668, pis. xxiii-xxviii. 



