1894. SOME NEW BOOKS. 73 



^' An Astronomical Glossary or Dictionary of Terms used in 

 Astronomy," by J. E. Gore, has been issued by Messrs. Crosby 

 Lockwood & Sons. Students of Natural Science, especially those 

 interested in Cosmogony, and in theories of climatic change, may be 

 glad of a handy book of Astronomical terms. The definitions are for 

 the most part brief. In the case of meteoric stones — " stones which 

 occasionally fall from the sky " — a little more might have been added. 

 Moreover, we may add the three kinds, Siderites, Siderolites, and 

 Aerolites, were named by Maskelyne, not Denning. 



The new edition of the Tunicata in Bronn's " Klassen und 

 Ordnungen des Thier-Reichs " is to form the supplement to bd. iii. 

 (Mollusca), and is edited by Dr. O. Seeliger, of Berlin. Lieferung i 

 (48 pp.) lies before us, and is devoted to the first four, and part of 

 the fifth, sections of the historical introduction, which is treated in 

 the same thorough manner that characterises the main section of the 

 volume. 



M. Paul Pelseneer's new work, entitled " Introduction a I'Etudes 

 des Mollusques," will, v^^e understand, shortly appear. It is to form a 

 single 8vo volume with 146 figures in the text, and will be published 

 by M. Lamertin, of Brussels, at a price (6 fr.) which should put it 

 within reach of all students of Malacology. 



The Royal Swedish Academy of Science has just issued part i. 

 of a detailed monograph of the Silurian Crinoidea of Gotland. This 

 work, on which Mr. F. A. Bather has been engaged for the past 

 four years, should prove of service to the numerous collectors of our 

 own Wenlock fossils. 



We have just received a number of publications from the United 

 States Department of Agriculture. That of the most recent interest 

 is volume ii. of illustrations of North American Grasses, dealing 

 with the grasses of the Pacific slope, that is, of California, Oregon, 

 Washington, and the north-western coast, including Alaska. It was 

 prepared by the late Dr. George Vasey, and was, probably, the last 

 official work on which he was engaged, as his letter of transmittal 

 bears a date but little prior to that of his death. It contains plates 

 with descriptions of one hundred of the more important species. 

 The former are among the nicest specimens of grass illustrations that 

 we have seen. 



We are glad to learn that Dr. WilHam Fraser Hume's pamphlet 

 on the Cretaceous sediments, which was reviewed on p. 228 of 

 our last volume, has now been published, and can be purchased from 

 F. H. Butler, 158 Brompton Road, London, S.W. 



