420 



NORTHERN NEWS. 



Mr. H. B. Booth's Presidential Address to the Yorkshire Naturalists' 

 Union will be entitled ' The Migration of the Common Swallow.' 



At the recent ' wireless concert ' at the Hotel Cecil, referred to else- 

 where, Viscount Grey, in proposing ' The Success of the Bird Sanctuary,' 

 said he had occasionally bored his friends by talking about birds. ' I 

 have one friend who, after I had been talking for some time on the 

 subject of waterfowl, said that ducks should only be talked about when 

 they are cooked.' 



We are agreeably surprised to find that Messrs. Wheldon and Wesley 

 are issuing a second edition of ' A Synopsis of the Accipitres (Diurnal 

 Birds of Prey), part i of which has recently appeared ' revised and 

 corrected throughout.' The first edition of part i was published in 1919 

 and contained 38 pages ; the new part, covering the same species, contains 

 63 pages. It is sold at 6/-. 



Some time ago Mr. Edward Lovett wrote a pamphlet on ' The Gun- 

 Flint Industry of Brandon,' in which he described a very complete 

 collection of the various tools used in connection with this old industry 

 at Brandon, Suffolk, and of the various forms of flints, ancient and modern, 

 forgeries, etc., emanating from that factory. This particular collection 

 has just been purchased by the Museum at Hull. 



Close upon the heels of part 20 of Barrett Hamilton's History of 

 British Mammals, we have part 21 (Gurney and Jackson, 3/6 net). This 

 contains descriptions of the squirrel and details of additions to the 

 records in volume 2. The publication is well illustrated by sketches 

 and diagrams, there are tables of measurements and so on, so that when 

 complete, we feel sure that this work will be the finest of its kind on the 

 particular subject dealt with. 



' The Study of Human Implements as an aid to the appreciation of 

 Principles of Evolution and Classification,' by E. J. Salisbury, is an 

 interesting, if unexpected, contribution to The New Phytologist for 

 November. The same journal contains ' A Study of Some Factors 

 Controlling the Periodicity of Freshwater Algs in Nature,' by W. J. 

 Hodgetts, "and Thealassiophyta and the Algal Ancestry of the Higher 

 Plants, by F. E. Fritsch. 



' The Rambler's Guide to Bradford and Environs ' (including 14 

 maps) has been published by ' Geographia ' Ltd., at 1/3 net. The guide 

 seems to have been written very carefully by someone thoroughly 

 familiar with the districts covered, and there are many illustrations of 

 interesting types of scenery, from photographs. We do not like the 

 shape of the Guide, which is very difficult to accommodate on one's 

 bookshelf, though it may be handy for the pocket. 



T. V. Barker has issued ' Practical Suggestions towards the study 

 of Crystals in Schools,' (14 pp., with interleaved blanks) which was 

 issued in connection with the ' Science Masters' Association, Oxford 

 Meeting,' recently. Mr. Barker deals with the subject from various 

 points of view under 12 headings, the first four of which are : — (i) 

 Apparatus. (2) Preparation of Solutions : General Technique. (3) 

 Screen Projection for Class Purposes. (4) Formation of Crystals. 



The Jouvnal of the Marine Biological Association issued in September 

 (price 5s. net) is a valuable contribution to Biological Science, and in 

 addition to various abstracts, contains the following memoirs : — ' The 

 LarvK" of the Decapoda Macrura and Anomura of Plymouth,' by G. E. 

 Webb ; ' The Larval and Post-Larval Stages of the Pilchard, Sprat and 

 Herring from Plymouth District ' and ' The Food of Young Clupeoids,' 

 bv M.^V. Lebour ; ' A Contribution to our Knowledge of the Life- 

 Histories of the Dog-fishes landed at Plymouth,' by E. Ford ; ' Intersexes 

 in Gammanis chevreitxi and Related Forms,' by E. W. Sexton and J. S. 

 Huxley ; ' Note on the Occurrence of Arthopyrenia foveolata at Plymouth ,' 

 by L. Batten. A large proportion of this useful work has been accom- 

 plished bv women. 



