Geology and, Natural History. 417 



mark the close of the middle Quaternary and also in cavern 

 deposits corresponding to the base of the upper Quaternary. It 

 belongs to the latter part of the Hiss glacial period and is known 

 to extend well into the Riss-Wiirm interglacial, as at Wilkirchli 

 in the Alps. The industry of the lower Quaternary is eolithic, 

 the evolution of the Chellean type not taking place until the middle 

 Quaternary. The probabilities are therefore that should Schoeten- 

 sack find an}?- artifacts in the horizon of Homo Heidelbergensis 

 they w T ill be of the eolithic type. Such a discovery would 

 establish not only the identity of the maker of Quaternary eoliths 

 but would also help immensely to solve. the riddle of Tertiary 

 eoliths. G. G. MacCuedy. 



17. The Commercial Products of India ; by Sir Geoege Watt. 

 London, 1908 (John Murray). — This is an abridgment of the 

 voluminous work well-known as the Dictionary of the Economic 

 Products of India, published in 1885 and continued up to 1894. 

 The many-volumed work has been out of print for some time. 

 The recent increase in economic activity in all the educational 

 centers as well as at the points where raw materials are inspected 

 and appraised, has seemed to render necessary a revised edition of 

 this standard treatise. It was, in its former shape, a very 

 unhandy work, but it was so well filled with carefully prepared 

 material, that the inconvenience of its clumsy volumes was always 

 forgotten. The present work is in a very attractive one-volume 

 edition, with a lavish use of marginal titles. Although this sys- 

 tem of employing headings in the margin is most advantageous 

 from every point of view, both in leisurely consultation and in 

 hasty reading, its cost in the printing office has restricted its use 

 in most of our scientific books. In this volume, practically every 

 paragraph has been fitted with its appropriate caption, so that 

 one can run down the page with great facility. To illustrate 

 this, we may glance at Tea, taking the pages entitled History and 

 Early Imports. Chinese Records ; Vegetable Tea (i. e., Tea used 

 as a vegetable), Use as a beverage, Imperial duty, Silence of 

 Marco Polo, Tea-drinking in China and Japan, First mention of 

 Tea-drinking in India, Story of Black and Green Teas, Chinese 

 plant in India, Taxation of Tea. By this method of indicating 

 the nature of the paragraph, it has been possible to fill the page 

 itself in the most economical manner. By a further use of a 

 large page, and thin paper, the substance of the many volumes of 

 the older edition, necessary for the student, is here given in a 

 most accessible form. The book contains with its copious index, 

 1189 pages of rather small type. 



The arrangement is alphabetical after a fashion, that is, the 

 generic names follow each other in regular order, in their Latin 

 form, but mingled with these are the common names, in English, 

 of groups, such as Gem-stones, Live-stock, etc. The whole trea- 

 tise has received careful attention at the hands of the revisers, and 

 the subjects have been brought down to a recent date. For 

 instance, such authorities as Winton's edition of Hanausek are 

 quoted. The work has a wide range, and necessarily so, since it 



