Geology. 89 



work is devoted to redescriptions of the 422 species collected, 

 most of which are illustrated on 55 plates. The final paper by 

 D. Reddick describes the mushrooms of Indiana. c. s. 



6. Illinois State Geological Survey, Year-Book for 1907 ; 

 H. Foster Bain, Director. Bulletin No. 8, 374 pp., 23 pis., 32 

 figs, with map. Urbana, 1907. — A number of papers contained 

 in this report have been already published (this Journal, xxiv, 

 447, xxv, 353-354, xxvi, 166). The remaining papers deal chiefly 

 with economic subjects, including cement materials, clay industries, 

 petroleum, artesian wells, lead and zinc, concrete, land reclama- 

 tion, and valuable studies relating to the alteration of coal, with 

 detailed investigations in certain areas. h. e. g. 



7. New Zealand Geological Survey, J. M. Bell Director. The 

 Geology of the Cromwell Subdivision, Western Otago Division ; 

 by James Park. Bull. No. 5 (new series). Pp. 86, pis. 20, maps 



10, geol. sections 6. Wellington, New Zealand, 1908. — The geo- 

 logical section of the Cromwell area includes, in the Paleozoic sys- 

 tem, two series : the Maniototo series of mica and chlorite schists 

 which have an extreme thickness of 30,000 feet and a remarkably 

 uniform schistosity, sills and dikes being almost completely absent 

 over the wide area of five survey districts ; and the Kakanui series 

 of upper schists which are less metamorphosed. The Pliocene is 

 represented by the Manuherikia series of shales and clays, con- 

 taining valuable seams of lignite. The region has been glaciated, 

 as indicated by the moraines and extensive terraces and river 

 gravels. All the glacial and fluviatile deposits are gold-bearing, 

 and the principles underlying the concentration of gold in these 

 gravels are discussed. Petrographic descriptions are given of the 

 following rocks: Chlorite and mica-schist, greywacke, serpentine, 

 hypersthene-diorite, feldspar-porphyrite, mica-gneiss, biotite- 

 granite, augite-hypersthene-diorite, augite-diorite, hornblende- 

 schist, hornblende-camptonite, sandstone, and chemical analyses 

 are given of altered greywacke, serpentine, mica-schist, and 

 chlorite-schists. Physiographically, the region is a part of the 

 central Otago peneplain, now deeply dissected into " high table- 

 top mountain ranges intersected by deep water courses and 

 separated from each other by river valleys or cleft in twain by 

 profound gorges". Mr. Park enters into an extensive discussion 

 of the origin and development of the block mountains, with their 

 intervening basins. h. e. g. 



8. Report on the Eruptions of the Soufriere in St. Vincent in 

 1902, and on a Visit to Montagne Pelee in Martinique. Part 



11. The Changes in the Districts and the Subsequent History of 

 the Volcanoes ; by Tempest Anderson. Petro graphical Notes 

 on the Products of the Eruptions of May, 1902, at the Soufriere 

 in St. Vincent; by John S. Flett. Phil. Trans. Roy. Soc. 

 London, series A, vol. ccviii, pp. 275-332, 27 pis. London, 1908. 

 — Dr. Anderson revisited St. Vincent and Martinique in 1907. 

 His descriptions of the changes which have taken place between 

 1902 and 1907 constitute an interesting study of the secondary 



