BOOK NOTICES 191 



an excellent bibliography and index of authors. The work is embel- 

 lished by a beautiful drawing, reproduced by the three-colour process, 

 of the royal cell of Termes bellicosus, showing the queen surrounded 

 by her progeny and guarded by her soldiers. 



Internationale Revue der gesamten Hydrobiologie und 

 Hydrographie. Edited by R. Woltereck. (Leipzig : Dr. Werner 

 Klinkhardt.) Subscription, 30 marks per annum. 



By the publication of this periodical another is added to the 

 long list of magazines which have for their object the furtherance of 

 Natural Science, and, in spite of the difficulties to which the ever- 

 increasing complexity of biological literature gives rise, the addition 

 is to be welcomed on account of its endeavour to unify our disjunct 

 knowledge of the physics and biology of the waters. The 

 periodical, which appears in two-monthly parts, is to be devoted to 

 the publication of articles dealing with the investigation of the 

 physical characters and biological content of waters salt and fresh, 

 of the great oceans, of seas and of ponds, of rivers and of springs. 

 But the goal that is kept in view throughout, is less the furtherance 

 of any of the many separate branches of science with which such a 

 study is concerned, than the welding of those loose links into a 

 solid chain — the comprehensive science of Hydrobiology and 

 Hydrography. 



Among the original contributions to the first volume may be 

 mentioned "A Hydrobiological Introduction," by Professor August 

 Weismann, and a paper on "The Distribution of Organisms in the 

 Hydrosphere as affected by varying Chemical and Physical Condi- 

 tions," by Sir John Murray. Besides that devoted to original 

 contributions the volume contains two other exceedingly valuable 

 sections : the first made up of short articles dealing with the 

 results of recent hydrobiological investigations — and here the work 

 of the Scottish Lake Survey bulks largely ; the other bringing 

 together the latest information available, by means of summaries 

 of researches published in contemporary journals. The volume 

 is illustrated by numerous plates — one of them containing beauti- 

 fully coloured representations of Daphnia — and many text-figures. 



Insect Stories. By Vernon L. Kellogg. London, George 

 Bell & Sons, 1908. Price 5s. 



The author of this entertaining little volume is a well-known 

 authority on Insects, and the writer of an important text-book on the 

 subject. Consequently anything he writes, even if adorned with 

 picturesque phraseology, and adapted for very youthful readers, may 

 be regarded as thoroughly reliable. There are thirteen of these 

 " Insect Stories," which is an unlucky number for the reader — 

 who will wish for more ! The stories cover a large field and are 

 pleasantly told, and the volume forms a charming gift-book for 



