738 REVIEWS 



Only the introduction to the Pelecypods is contained in Part i, 

 but its improvement over the original is manifest, and we are able to 

 form some idea of what may be expected from Dr. Dall, on this group 

 and the Gastropods. The appearance of the concluding part of the 

 first volume will be awaited with great interest, since without doubt 

 the contributions of Messrs. Hyatt, Beecher, Clarke, Scudder, and 

 others who are understood to be engaged on its revision will so 

 elevate the character of the work as to render it the standard author- 

 ity on the subject for years to come. 



Palaeontological science is certainly beholden to Wachsmuth, 

 Sladen, Ulrich, Schuchert, Dall, and the others for their labors of love 

 in trying to make this an authoritative and trustworthy text-book. 

 How well they have succeeded remains to be determined after the 

 book has been used in the laboratory, and it is certainly to have a 

 wide use here. The improvement is so marked over the German 

 edition, the "translation" contains so little from the original, and 

 the "revision" is so complete that the question naturally arises 

 whether Dr. Eastman could not just as well have gone a little far- 

 ther in his work and made it a text-book by American authors 

 which would have held the same place among English-speaking 

 people as the original Handbuch does among the Europeans. 



Charles R. Keyes. 



Die EriLptivgesteine des Kristianiagebietes. II. Die Eruptionsfolge 

 der triadischen Eriiptivgesteiiie bei Predazzo in Siidtyrol. By 

 Professor W. C. Brogger. Pp. 1-183, with 19 figures in 

 the text. Kristiania, 1895. 



For the purpose of gaining more light upon certain eruptive rela- 

 tionships of the rocks of the Christiania region. Professor Brogger and 

 his friend Professor Ussing spent eight days in studying this classic local- 

 ity of the south Tyrol. In a delightful introduction some idea is given 

 of the perennial interest of the region to geologists by reference to the 

 long roll of the most famous workers in geology preserved in the 

 old guest-book of the "Golden Ship" at Predazzo. 



The name monzonite (from the village of Monzoni) was first applied 

 to the eruptive rocks of this region by Lapparent in 1864, but since 

 his time different authors have used it in various senses. The earlier 

 writers usually referred to these rocks as syenites. Tschermak in 1869 



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