REVIEWS 363 



be cited, especially since his observations are so easy to repeat in Spitsbergen. 

 The description of drumlins is excellent ; but we fancy that too much stress is laid 

 on the hypothetical " ground moraine " (p. 29), said to be formed beneath the ice, 

 and too little on the accumulation of everything that gets into the ice, whether by 

 plucking or gravitation, towards the lower layers of the sheet. In the field it 

 appears that this englacial material is the true source of boulder-clay. 



But these are details foreign to the main purpose of the book. It presents an 

 admirable view of the features left by the last ice-age, and its title implies a 

 recognition, so often lacked by glacialists, of previous and probably very similar 

 ice- ages which also affected the whole globe. A mention of these in the chapter 

 on theories of the Ice-age may be useful in the next edition. Scandinavia, as 

 a well-worked and typical district, is dealt with in special detail, and serves, with 

 the Great Lake region of North America, as a basis for the isostatic theory of 

 shore-lines. Mr. Wright has given us the fruits of a wide range of reading, and 

 his very lucid and attractive style is an additional claim upon our gratitude. We 

 note extremely few misprints, such as " Rundhockorn " on p. 31. The use of the 

 spelling "isostacy" is evidently intentional. G. A. J. C. 



Geological Excursions round London. By G. MacDonald Davies, B Sc. 

 F.G.S. [Pp. viii + 156.] (London : T. Murby & Co., 1914. Price 3^. 6d. 

 net.) 



LONDON, in addition to its great academic schools of geology, includes also the 

 headquarters of the Geologists' Association, a body whose activities seem to grow, 

 from year to year. Mr. Davies's book will thus recall to generations of students 

 their first instruction from actual sections and from land-forms viewed from the 

 Chilterns or the Surrey hills. It assures us that there are still people in our great 

 cities who move about occasionally on foot, and who love the quiet of the Chalk 

 downs, flecked with cloud-shadows, or the crisp heather of the Greensand ranges, 

 remote for a time from the dust and hooting of the highways. In their excursions, 

 with the help of this pocket guide-book, they may learn a great deal about the 

 rocks that form the surface, from the Jurassic period onwards, and also about 

 the unseen Armorican range, against and across which these successive strata 

 were laid down. 



Mr. Davies's illustrations revive our first enthusiasms. Some of us, under the 

 care of Prof. Judd, were drawing sections of Tilburstow Hill and Croham Hurst 

 nearly forty years ago. The author does not fail to point out where fine views 

 may be obtained, and he even leads us to tea-houses in delightful places. To 

 those who do not know the London Basin, the extent of rural landscape and 

 unbroken woodland within thirty miles ot St. Paul's will be amazing. The first 

 ten miles should discourage no one who has an object in the country at the other 

 end ; and Mr. Davies's photographs of quarries and descriptions of field-routes 

 provide us with every inducement to go out and observe. A very good geological 

 map in colours is given as a frontispiece. G. A. J. C. 



Lehrbuch der Anthropologic, in systematischer Darstellung. By Dr. Rudolf 

 Martin. [Pp. xvi + 1181. With 3 plates, 460 figures in the text, and 

 2 observation-forms.] (Jena : Gustav Fischer. Price 35 marks.) 



ANTHROPOLOGY is certainly not the least important of the pure sciences, and might 

 even put in a claim to be regarded as the most essential of them all. It forms the 

 connecting link between zoology and sociology and between zoology and medi- 



