KEVIEWS. 65 



This, to the young student of Nature, will be found a most interesting and 

 instructing book. It treats in a very plain and comprehensible manner of 

 Gravitation, Molecular Attraction, Properties of Solids, Liquids and Gases, 

 Heat, Light, Sound, Electricity, Magnetism, etc. 



Chemical Lecture Notes, taken from Prof. C. O. Curtman's 

 Lectures at the St. Louis College of Pharmacy. By H. i\L Whelpley, Ph.G. 

 Crown 8vo, pp. 211. (St. Louis, Mo., U.S.A. : The Author. 1888.) 



We have here the Second edition very considerably enlarged of this useful 

 work. It is divided into two parts : the first, " Chemical Physics," is divided 

 into 21 sections, and is illustrated by 100 neatly engraved figures. The other 

 section is devoted to "Chemistry" proper, and consists of 103 sections. 

 Pharmaceutical and Medical students will doubtless find these notes helpful. 



The Star Atlas, with Explanatory Text. By Dr. Hermann 

 J. Klein ; translated and adapted for EngHsh readers. By Edmund McClure, 

 M.A., M.R.I.A. 4to, pp. viii.— 72. (London: The Society for Promoting 

 Christian Knowledge. 18S8.) Price 7s. 6d. 



This excellent Atlas contains 18 maps printed by E. A. Funke, Leipsic 

 showing all the stars from i to 6'5 magnitude between the North Pole and 

 34' South Declination, and all Nebulae and Star Clusters in the same region, 

 which are visible in telescopes of moderate powers. The maps are of large 

 size, each map being the size of two pages of the book, and mounted 011 

 guards, so that each map opens perfectly flat. The Stars are printed their 

 relative sizes in black ink, whilst to prevent confusion, and for greater clear- 

 ness, the names of the Stars and Constellations are printed in red ink. 



Moveable Tropic Diagram of the Seasons. (Edinburgh 

 and London: W. and A. K. Johnstone. 1888.) Price los. 



A most ingenious and convenient chart, invented and constructed by John 

 W. Mason, of Edinburgh ; it consists of a circular map of the Northern 

 regions, extending Southwards to a little below the British Isles ; in the centre 

 of the chart the map is continued Southward to a little below the Tropic of 

 Capricorn ; and in a groove extending from the North to the South Tropic, a 

 brass representation of the Sun is arranged to slide. This, in moving, carries 

 with it, at the upper part of the circular map, a black shadow, showing the 

 length of day and night in the Northern regions, the time of the rising and 

 setting of the sun at London, and its situation, with respect to the Equator 

 and Tropics on any given date. 



Memory: Its Logical Relations and Cultivation. By F. W. 

 Edridge-Green, M.D. Crown 8vo, pp. iv.— 274. (London: Bailliere, 

 Tindall, and Cox. 1888.) 



This work offers to every teacher and student a scientific and practical 

 treatment of the subject of memory and its cultivation ; it is divided into two 

 parts. The first treats of Sensory and Motor Memory ; the Faculties of the 

 Mind ; Special Memories ; Memory in the Lower Animals ; the Variations of 

 Memory at different periods of life ; the Localisation of Memory, etc. etc. 

 Part 2 treats more particularly of the Cultivation of the Memory, for which 

 twenty-one rules are given. These rules are practical and generally applicable, 

 because they are based on functions which are the same in all, and can even be 

 utilised for the purpose of teaching animals, and very considerably in the 

 education of children. We can confidently recommend this book to all 

 engaged in the work of teaching. 



