118 Reviews and Book Notices. 
Mr. H. B. Booth showed some slides kindly lent by Mr. Mitchell, 
illustrating the sport of Falconry. 
Mr. E. W. Taylor read a paper on “ Moorland Birds,’ illustrated by 
lantern slides. He started at the lower reaches of a typical moorland stream 
up to the wide stretch of a Yorkshire moor; the successive types of land- 
scape were shown, and the characteristic avi-fauna of each habitat was 
dealt with. With few exceptions, such as the Dotterel and Dunlin, a most 
comprehensive series of photographs of our moorland birds had been 
obtained, which greatly enhanced a very interesting paper. Mr. Taylor 
spoke of the significance of the white rump of the Chat family and others, 
but owing to the late hour no discussion on this question was practicable. 
Atenas 
ee 
SOME BOOKS ON GEOLOGY. 
The Student’s Handbook of Stratigraphical Geology, by A. J. Jukes- 
Browne. Second Edition, London: E. Stanford, xiv. + 668 pp., 12s. net. 
Mr. Jukes-Browne’s long connection with the Geological Survey, and the 
valuable monographs he has prepared, péculiarly qualify him for a 
standard work on Stratigraphical Geology, a subject he has made his 
own. The first edition of the book was well known and well read, so 
much so that we need hardly occupy space in describing it to our geological 
readers. The present edition is considerably enlarged, and many more 
illustrations have been added. A new feature is the greater prominence 
given to the Continental representatives of the English beds. The author 
has also had the advantage of the advice of many specialists, and a par- 
ticularly valuable service has been rendered by Mr. Woods in revising 
the descriptions and lists of fossils and amending the nomenclature. 
A useful feature is the list of references which follows each chapter, so 
that the student may readily consult the more important memoirs bearing 
upon any particular subject in which he may be interested. There are 
over two hundred illustrations, principally of typical fossils, 
An Introduction to British Clays, Shales, and Sands, by Alfred Bb. 
Searle. London: C. Griffin & Co., pp. xiil.+451. Mr. Searle is a clay 
specialist, and in this addition to Messrs. Griffin’s series of technological 
handbooks, a want has been well supplied. The economical value of 
clays and clay products has warranted such a publication for some time, 
and certainly Mr. Searle seems to have dealt with the subject in a very 
thorough and practical manner, There are twelve chapters, dealing with 
the formation of clays from igneous rocks, sedimentary rocks, how recent 
clays were formed, characteristics of clays and shales, mineral constituents, 
physical and chemical properties, prospecting, mining and purification 
of clays, and ‘the legal position of clays.’ There does not seem to be 
any aspect of clays that has not been touched upon. As a frontispiece 
is a map showing the chief clayworks in Great Britain, Besides those 
around Hull, we notice there is one only in Holderness, presumably that 
at Withernsea. It is odd to read a description of a map showing the 
distribution of boulder drift ‘after Wivight and Bonney’! This unique 
linking of two names is probably due to the fact that in his ‘ Ice-Work ’ 
Professor Bonney commandeered Professor Wright’s map, and as no 
acknowledgment was made, Mr. Searle has naturally assumed that it 
had some of Professor Bonney’s work upon it. Unfortunately the illus- 
tration of a ‘Typical Ammonite from the Speeton Clay,’ reproduced 
from The Naturalist, is a Kimeridge Clay species, though from Speeton. 
But these are minor points.. Anyone desiring information on clays must 
refer to Mr. Searle’s volume. 
The Natural History of Clay, by A. B. Searle. Cambridge, 1912, pp. 
viii. +176. After giving a table of clay rocks, Mr. Searle occupies one of 
the admirable shilling ‘Cambridge Manuals’ by dealing with the chemical 
and physical properties of clays, clay and associated rocks, origins and 
Naturalist, 
