116 Scientific Intelligence. 



quantity here, Doctor Veatch is working out the geology of these 

 deposits for the General Asphalt Company of Philadelphia, and 

 Miss Maury the paleontology. In the present work are described 

 128 species, a very few from the lower part of the Cretaceous, 

 the bulk from the Eocene and Oligocene. The new subgenus of 

 gastropods, Yeatchia, is proposed. 



The author points out for the first time that basal Eocene 

 occurs on Soldado Rock, Trinidad. Further, that "the Alabama 

 Midway Eocene and the Pernambuco beds of Brazil" are linked 

 by common species. This is a valuable correlation, for the Per- 

 nambuco fauna has long puzzled stratigraphers. More often it 

 has been regarded as of Cretaceous age, but the commingling of 

 Trinidad and Pernambuco species proves that the last named 

 fauna is also of Midway Eocene time. The author also states 

 that "the age of the shelly asphalt on the Brighton beach is 

 Oligocene — and late Oligocene, perhaps about equivalent to the 

 Chipolan of Florida " (27). c. s. 



4. Formation of Goal Beds ; by John J. Stevenson, 1911- 

 1913. — During the past three years Professor Stevenson has been 

 publishing in the Proceedings of the American Philosophical Soci- 

 ety a series of four articles under the above title (see review in this 

 Journal, xxxv, 546, May, 1913). These papers are now brought 

 together in book form, with their own pagination, title page, pref- 

 ace, and table of contents. In addition, the whole is made more 

 accessible through a very good index in two parts, one of authors 

 cited and the other of a general nature. 



This great work, a labor of love, is indispensable to all students 

 of the Coal Measures, whether practical, stratigraphic, historical, 

 or biologic. It is a remarkable record of industry in a geologist 

 of more than three score years and ten. c. s. 



5. Contributions to the Geology of the Nordingrci Region / 

 by J. M. Sobral. 8vo, pp. 177, pis. xii, map in cover. Upsala, 

 1913. — This is a very careful, detailed study of a small area of 

 crystalline rocks on the east coast of Sweden. Inland the area is 

 bounded by the Archean and the rocks described occur as intru- 

 sions along the coast ; there are small amounts of sedimentary 

 rocks in contact with them, quartzites and arkoses. The igneous 

 rocks are granites, monzonites, gabbros and anorthosites. The 

 field occurrences and relations of these rocks are minutely 

 described and considered, their petrography treated in detail, and 

 many analyses of the types given ; it is indeed chiefly a petro- 

 graphic study. 



To one of the feldspathic dikes of the district the name of 

 Varnsingite is given ; the rock consists mostly of albite, with 

 some pyroxene, titanite, magnetite and apatite ; with epidote, 

 prehnite, and muscovite as alteration products. The analysis 

 shows approximately 56 per cent of silica, 16 of alumina, 7 of 

 lime, 5 of magnesia, 6 of soda, with only a minute quantity of 

 potash and about 4 per cent of iron oxides. The grain is rather 

 coarse. The author brings it into relation with albitites of other 

 regions. l. v. p. 



