Geology and Mineralogy. 309 



No. 94. The mechanism of solid Viscosity, by Carl Bartjs. 

 13 S pp., with figures. 



No. 95. Earthquakes in California in 1890 and 1891, by E. S. 

 Holden. 29 pp. 



No. 96. The Volume Thermodynamics of Liquids, by Carl 

 Barus. 100 pp., with plates. 



Memoir Vol. XVII. The Flora of the Dakota Group, a pos- 

 thumous- work by Leo Lesquereux, edited by H. H. Knowlton. 

 400 pp. 4to, with 66 plates. 



8. The Seismoloyical Journal of Japan : edited by John 

 Milne, F.S.S. Vol. I, 1893. — This Journal succeeds to the pub- 

 lications of the Seismological Society, this society having ceased 

 to exist. This volume corresponds to vol. xvii of its Transactions. 

 As Japan is extraordinary as regards frequency of earthquakes, 

 and also their violence, its Seismological Observatory and 700 

 outside stations are capable of more thorough investigation in 

 this department than is elsewhere possible. The work already 

 done has produced, for future investigators, new seismographs 

 giving absolute measurements of earth-motions, and has led to the 

 application of principles for the mitigation of the effects of earth- 

 quakes on buildings, besides advancing seismological science in 

 other ways. This volume of 150 pages contains various papers of 

 value by Mr. Milne, and others by Prof. W. K. Burton, and F. 

 Omori. 



9. Bulletin of the Geological Institution of the University of 

 Upsala, edited by Hj. Sjogren. No. 1, Vol. I, Upsala, 1893. 

 95 pp. with 5 plates. — This new publication, of which the first 

 number has recently appeared, is designed as a medium for the 

 issue of original investigations made at the University of Upsala. 

 The leading and longest article (pp. 1-64) is entitled Contribu- 

 tions to Swedish Mineralogy by Hj. Sjogren and contains the re- 

 sults of his observations upon the species of the humite group 

 from Sweden, also on svabite, adelite, etc. Other articles, chiefly 

 geological, are by Wiman, O. Nordenskiold, Anderson, etc. 



10. Trait e de? G-ites Miner aux et Metalliferes ; recherche, etude 

 et conditions d' "exploitation des mineraux utiles, description des 

 principales mines connues, usages et statistique des Metaux. 

 Cours de Geologie Appliquee de l'Ecole superieure des Mines; 

 par Ed. Fuchs, Ingenieur en chef des Mines, Professeur a l'Ecole 

 superieure des Mines, et L. DeLaunay, Ingenieur au Corps des 

 Mines, Professeur a l'Ecole superieure des Mines. Paris, 1893 

 (Baudry et C ie ). Large 8vo, vol. i, 823, pp., vol. ii, 1015 pp. 

 with many maps and illustrations. — This treatise of over 1800 

 octavo pages, on useful minerals and ores, their distribution, 

 modes of occurrence, methods of origin, and the industrial sub- 

 jects connected with them and their exploration, is an admirable 

 work. After an introduction of 110 pages, consisting of an 

 alphabetic list of localities, a table giving the geographical dis- 

 tribution of localities over the globe, and tables for the conver- 

 sion of French and foreign weights and measures and coins, 



