REVIEWS. 
85 
Energy in Nature. By W. Lant Carpenter. 8vo., 212 pp., 81 woodcuts. 
Price 3s. 6d. Cassell & Co. 
Mr. Lant Carpenter lias done good service to the cause of science 
in many ways, among which his lectures delivered in connection with 
the Gilchrist Trust may be specially named. The admirably clear and 
interesting book which he has now written had its origin in a course 
of six lectures lately delivered to the artisans of certain Lancashire 
towns, and it probably owes much of the simplicity combined with 
thoroughness, which is its leading feature, to the circumstances under 
which it was written. 
Commencing with Mechanical Energy, Mr. Carpenter passes on to 
Heat, Chemical Attraction, Electricity, and Magnetism, and shows by 
clear reasoning and well-selected experiments how all these forms of 
energy are connected and convertible—any one into any other. The 
last chapter, which deals with Energy in Organic Nature, will be 
especially interesting to students of Natural History. Throughout the 
work the very latest results of scientific investigation are used and 
described. W. J. H. 
The Geology of Stroud. By E. Witchell, F.G.S. 8 vo., 108 pp., 5 plates. 
Price 3s. 6d. G. H. James, Stroud. 
Too many of our local workers in science leave no record of the 
facts which they have ascertained; we therefore welcome the publica¬ 
tion, in a compact and connected form, of the results obtained by so 
careful and thorough a geologist as Mr. Witchell. Stroud forms an 
admirable centre for the study of the Oolitic and Liassic strata, includ¬ 
ing the debatable sandy beds—which the author proposes to term the 
Cottesiuold Sands —that lie between the clays of the Lias and the lime¬ 
stones of the Oolite. The physical geography of the district is 
described in the first chapter, and in those which follow the various 
formations are considered in detail, commencing with the Lower 
Lias and ending with the Cornbrash. The last chapter deals with the 
Gravels, River Deposits, and Surface Denudation of the district under 
consideration. The principal sections of the country round Stroud 
are fully described, and very complete lists of the fossils obtained are 
given. The illustrations include two plates of sections and three 
plates of fossils. W. J. H. 
Batumi ^jistorn Bates. 
Mr. Herbert Spencer. — It will interest the admirers of Mr. 
Herbert Spencer to hear that his works, which have already been 
translated into the principal Continental languages, have recently been 
translated into Japanese, and are now being reprinted in Australia. 
