480 



German the booklet may be cordially recommended. Its price is 

 half-a-crown. 



Ponds and Rock Pools, by Henry Scherren (published by the 

 Religious Tract Society). — This little book of 204 pages of text, 

 with numerous illustrations, is very well written and conveniently 

 arranged, and it can be recommended to all beginners in pond 

 hunting. They will find therein a description of all the chief 

 appliances for, and methods of collecting, capturing, and examining 

 micro-organisms, which are used and practised by the experienced 

 workers in this field, as well as a description of a number of objects, 

 chiefly animals, usually met with in ponds and sea-side pools. 



The headings of the six chapters will best give an idea of the 

 scope of the book: Chapter I., Pond and Rock-pool Hunting; 

 Chapter II., The Beginning of Life ; Chapter III., Sponges and 

 Stinging Animals ; Chapter IV., Worms ; Chapter V., Starfish, 

 Arthropods, and Molluscs ; Chapter VI., The Micro-aquarium. 



The illustrations are mostly very well selected as types of the 

 respective groups of animals ; the figure on page 123, however, 

 must be criticized : the Rotifer represented seems to be a cross 

 between Bracliionus jmla and that variety of Brachionus hakeri 

 known as brevispmus,SLnd we must seriously doubt that the author 

 has ever met with such an animal. If the figure represents B. 

 pala, then the posterior part is wrong, and if it is to stand for B, 

 brevispimis, then it ought to have six spines anteriorly, instead of 

 four, and of somewhat different shape. 



Such slight defects will, however, not detract from the value of 

 the hook to those who wish to use it and profit by the mass of 

 useful information brought together with much labour, and concisely 

 stated. A better book could not be placed in the hands of a 

 young naturalist eager to know how to catch his game and what 

 to do with it afterwards. Its price is half-a-crown. 



Note. — The catalogue of the Williams Collection has been 

 printed and may be obtained from the Hon. Curator, Mr. E, T. 

 Browne, F.R.M.S. Price 6d. 



