THE author of this volume is an Oberbergrath, and also Director of the Imperial Mining Academy at Pribram. During the last seventeen years he has from time to time published notices of the mineral veins and other mining features of Transylvania, Hungary, and Bohemia; and he now presents to the public a general treatise or handbook of the useful minerals. His experience has not been wide enough to enable him to write a book that fully justifies the title he has chosen for it, and his acquaintance with the literature of his subject appears to be limited to the German language. But the book is the work of a practical man, is well arranged, and contains much useful information. Fresh illustrations even of well-known facts are always interesting, more especially when they carry with them some little features that are novel. In this respect, mining geologists in this country will find it worth their while to hear what Herr Grimm has to say of the minerals, veins, beds, faults, and other mining features of various parts of the Austrian Empire. Mining Geology.—Die Lagerstätten der nutzbaren Mineralien. Johann Grimm Von. (Prague: J. G. Calve).