Book Notice. 
359 
Mammals ’ ; Dr. A. Smith Woodward, ‘ The Rhodesian 
Skull ’ ; Miss Dixon, ‘ Periodicity in Protozoan Fauna,’ and 
Dr. J. W. Munro, ‘ The Natural History of the Large Pine 
Weevil,’ — all these, though appearing as titles only, have a 
very real value as indicating the great range that investigation 
now covers. Most of these were bold incursions into the deep 
water of science by men holding reputations of international 
weight. One of the most engrossing sidelights, on evolution 
and the development and mutation of species, is found in the 
study of hormonic secretions. Their importance and functions 
appear to be the greatest addition to Zoological Science that 
has been made of recent years. When we thoroughly under- 
stand the processes of their activity, many of the present 
problems of biology will disappear, and we may very well 
wonder what will be the position of this branch of knowledge 
if the present rate of progress continues for another ten years. 
: o 
Handbook to Hull and the East Riding of Yorkshire, edited by 
T. Sheppard, M .Sc. , F.G.S., pp. 532, plates and figures. London 
and Hull : A. Brown & Sons, Ltd., 1922. Price 5s. gd., post free. 
Not the least of the benefits due to the meetings of the British Association, 
is the preparation of a series of Handbooks, descriptive of the places 
which it visits ; many of these books have a permanent value. The one 
under notice, prepared for the members who attended the recent meeting 
at Hull, is an admirable illustration of what such a handbook should be, 
as could be naturally expected, when undertaken by so accomplished 
and experienced an editor. A review in The Naturalist will naturally 
deal with that part of the handbook which treats of natural history 
studies, but mention may be made of the interesting chapter on the ‘ Rise 
and Progress of the City and County of Kingston -upon-Hull/ by the late 
Sir Albert Kaye Rollit, who died while the book was being printed. 
Some of the articles are signed ; others not ; and we gather from the 
preface that the latter were penned by the Editor. The brief description 
of his work on ‘ The Lost Towns of the Humber ' is welcome. Archaeology 
geology, zoology and botany are treated in articles of varying length. 
Some are largely lists of names, others give interesting information on 
ecology and other matters. The archaeological chapters treat of relics 
of various ages, and one is struck with the rich yields of so many different 
periods, from prehistoric implements to tradesmen’s tokens and tobacco- 
pipes. The latter have been manufactured in Hull since the seventeenth 
century. The geological chapter is instructive, but somewhat brief. 
The various articles devoted to the groups of the animal kingdom are 
specially marked by their varying length, thus only 10 pages are assigned 
to the marine mollusca, and 27 to those inhabiting land and freshwater. 
Such inequality is obviously unavoidable in a work of this nature, but 
the treatment of habitat in the article on the marine molusca is so 
suggestive, that one wished for fuller information. A good deal of matter 
concerning ecology is included in the chapter upon the Botany of East 
Yorkshire. A concluding chapter on the Rainfall of the Riding is from 
the pen of Dr. Min, and no further comment is necessary. The handbook 
is well got up, with admirable illustrations. It will be for a iong time to 
come, the authoritative guide to the Riding, so far as history, archaeology 
and natural history are concerned, and the editor must be heartily con- 
gratulated on the result of his evidently laborious task. — J. E. Marr. 
1922 Nov. 1 
