Geology and Mineralogy. 171 



Tertiary Paskapoo beds ) T 



c t?j 4. t T >- .Laramie 



Cretaceous i Edmonton heds f 



cetaceous -j pierre &nd Fox HU1 



Devono-Carboniferous 



Cambrian \ Castle Mt. Group 



( Bow mver Series 



Archean _ .Shuswap Series w. 



6. Mesozoic Fossils, Vol. I, Pt. IV. On some additional or 

 imperfectly understood fossils from the Cretaceous rocks of the 

 Queen Charlotte Islands, with a revised list of the species from 

 these rocks ; by J. F. Whiteaves. Pp. 263-307, pi. 33-39. 

 1900. — In addition to making a thorough revision of the Cre- 

 taceous faunas of the Queen Charlotte Islands, the author par- 

 ticularly discusses the fauna of the " lower shales," describing 

 several new species. w. 



7. The Geology of the Albuquerque Sheet ; by C. L. Herrick 

 and D. W. Johnson. From the Bull. Sci. Lab., Denison Univer- 

 sity, Vol. xi, pp. 175-239, folded map and plates xxvii-lviii. 

 June, 1900. Edited by W. G. Tight.)— The authors present in 

 this paper a detailed account of their study of the Albuquerque 

 region, as a sample of the geology of the Territory of New Mex- 

 ico. They give descriptions of the species, some of which are 

 new, and figures of the old species are reproduced from Bulletin 

 106, of U. S. Geological Survey. It furnishes a valuable sum- 

 mary of the local geology, correlated and compared with stand- 

 ard sections of other regions. h. s. w. 



8. i" Vulcani deW Italia Centrale. Parte I, Vulcano laziale; 

 by V. Sabatini. Vol. X of Memorie descrittive della Carta 

 Geologica Italiana. 8vo, pp. 392, pi. 11. Rome, 1900. — This, 

 the first of a projected series of monographs on the volcanoes of 

 central Italy, is a careful and detailed study of the complex of 

 eruptive vents and the materials of which they have been built 

 up. The author distinguishes five distinct craters, the oldest 

 being the largest (Tusculan), and the latest that of Ariccia. The 

 extensive deposits of tuff in the Roman Campagna are described 

 at length, and the vexed question of their age and order of suc- 

 cession discussed. The earliest manifestations of activity appear 

 to have been about the end of the Pliocene. Detailed petrograph- 

 ical descriptions are given of the tuffs and lavas, among the 

 interesting features being the growth of leucite crystals and their 

 alteration to feldspar. A few new analyses are given of the leu- 

 citites and leucite-tephrites, but it may be regretted that the author 

 did not devote more space to a discussion of the relationships of 

 these interesting rocks. A number of good phototypes and a 

 colored plate of rock sections, together with a geological map on 

 a scale of 1:75000, adorn the volume, which is an important addi- 

 tion to the literature of Italian geology. h, s. Washington. 



• 9. Occurrence of Zoisite and Thidite near Baltimore* — These 



*From notes by the late John W~. Lee furnished by Prof. A- W. Bibbins of 

 Baltimore. 



