i;6 SCIENCE PROGRESS 



subjects, with the object and use of botanic gardens and museums, and gives sound 

 practical hints to field botanists and collectors. 



Part I. (pp. 19-207) is practically a botanical text-book, in which excellent 

 features are the treatment accorded to the biology of the flower, and to the forms 

 of vegetation and the geographical distribution of plants. 



Part II. (pp. 211-643), the main portion of the book, contains an account of the 

 classes, cohorts, orders, and chief genera of plants arranged alphabetically under 

 their scientific names. For reference purposes this part is invaluable, and with the 

 improvements effected since the first edition the inquirer will usually find the order 

 and geographical distribution of a plant ; those of biological or economic interest are 

 well described, whilst large groups and important or interesting plants are very 

 fully treated, e.g. the account of Filicinece occupies five pages. 



Part III. consists of a comprehensive glossarial index. 



To visitors to botanical gardens who wish to learn something of plants bearing 

 only their scientific names, travellers in foreign lands, in addition to the professed 

 botanical student at home, this book can confidently be recommended as one of the 

 most useful of modern botanical works of reference. 



W. G. Freeman. 



A List of Official Chemical Appointments. Second Edition. [Pp. 172.] Com- 

 piled by Richard B. Pilcher, Registrar and Secretary of the Institute 

 of Chemistry. (The Institute of Chemistry, London, 1908 ; price 2s.) 



This list has been compiled, under the direction of the Council of the Institute 

 of Chemistry, with a view to affording information to students intending to take 

 up chemistry or any of its applications as a profession. In addition to giving a list 

 of official appointments open to chemists, and of the names of their present 

 occupants, it specifies, where possible, the conditions under which these posts 

 are held, and the qualifications insisted upon by the authorities in whose hands 

 appointments to these posts are vested. 



The contents are arranged alphabetically, and there is an excellent index 

 of names of persons holding official appointments, so that the information given 

 on any point can be referred to readily. Nothing but actual everyday use can 

 satisfactorily test the utility and trustworthiness of a compilation of this description. 

 This test the first edition answered well, and the second edition, which is somewhat 

 wider in scope, seems to have been prepared with equal care. 



T. A. H. 



