Miscellaneous Scientific Intelligence. 389 



Volume II, together with the Coleoptera by Perkins and Sharp, 

 the Mollusca by E. R. Sykes, the earthworms by F. E. Beddard, 

 the entozoa by A. E. Shipley, the Arachnida by Eugene Simon, 

 the Isopoda by Adrien Dollfus, the Amphipoda by T. R. R. Steb- 

 bing, and a supplemental list of Hemiptera by G. W. Kirkaldy. 



In volume III are the Diptera by P. H. Grinshaw and P. 

 Speiser, Hemiptera by G. AY. Kirkaldy, Coleoptera by D. Sharp, 

 Hugh Scott and D. C. L. Perkins as well as other groups of 

 insects, Mallophaga and Myriopods. 



With the publication of these reports the Sandwich Islands 

 may be considered as better known zoologically than most other 

 parts of the world. But the fact that some 300 new species of 

 insects and numerous species of other animals have been 

 described since their publication shows that much still remains to 

 be done. w. r. c. 



6. World Atlas of Commercial Geology. In two parts. Part 

 I. Distribution of Mineral Production. Pp. 72, 72 plates. 

 Washington, 1921 (U. S. Geological Survey, price $2.00).— 

 The text of this atlas consists of brief accounts of thirty of the 

 more important mineral commodities. For each commodity is 

 given in compact form, and stripped of all unnecessary techni- 

 calities, the salient features of the uses, possibility of employment 

 of substitutes, geologic occurrence, geographic distribution, 

 technology, centers of production and consumption, statistics of 

 output, and the position of the United States in the industry of 

 each of the mineral products. Many of the tables of world out- 

 put by countries are pioneer compilations and have entailed an 

 enormous amount of research in a dozen different languages. 



The maps, as the title of the publication suggests, are the main 

 feature. The thirty commodities are divided into nine groups, 

 and the output of each commodity is shown by means of nine 

 series of eight maps each. The first map of each series shows the 

 world production and consumption of the commodities of each 

 group ; for example, one series shows the industrially related 

 group of iron ore, manganese ore, and chromic iron ore, each com- 

 modity being indicated by a separate color. The first map of each 

 series thus gives at a glance a world view of the distribution of 

 mineral production, and further it serves as a key to the succeed- 

 ing maps, which show the production by leading districts in the 

 countries of the several continents, including Oceania. The pro- 

 duction shown is that for 1913, the last normal year before the 

 war. The final map of each series shows the production in the 

 United States in 1918. A vast amount of information is graphi- 

 cally summarized and illuminatinglv presented in these maps. 



Part II. Water Power of the World; by Herman Stabler, 

 B. E. Jones, 0. C. Merrill, and X. C. Grover. Pp. 37, 10 maps 

 (U. S. Geological Survey, price, $1.00). — This is an inventory of 



