482 Scientific Intelligence. 



5. Shaicangunk Mountain. — Under this title N. H. Darton 

 gives his interpretation of the structure and topography of the 

 mountain, the surface being mainly the expression of plications 

 of the thick Shawangunk grit overlying the soft shales of the 

 Hudson River epoch, whose erosion has determined the more 

 'abrupt eastern slopes of the mountain mass. — The National 



Geographic Magazine, vol. vi, pp. 23-34, Pis. 1-3, March, 1894. 



6. Geological Section of the Alps. — A. Rothpletz has pub- 

 lished a report which will be of much value to geologists crossing 

 the Alps, or wishing to gain a vivid idea of their structure. In 

 " Ein geologischer Querschnitt clurch die Ost-Alpen nebst anhang 

 ilber der sog. Glarner doppelfalte (pp. 268, 2 plates and 115 

 figures, Koch, Stuttgart, 1894), a section is run from near Tolz 

 across to Bassano nearly along the meridian of Munich, 260 kilo- 

 meters in length. A topographical map of the region is accom- 

 panied by a long colored profile section (over 11 feet in length) 

 on a scale 1 : 75000, exhibiting clearly the general structure. The 

 details of structure are well elaborated by figures distributed 

 throughout the text. 



7. The Arkansas Coal Measures. — In a paper on the Arkansas 

 Coal Measures in their relations to the Pacific Carboniferous 

 Province, J. Perrin Smith has made an analysis of the faunas of 

 the several divisions of the Arkansas Coal Measures and has dis- 

 cussed their relations to the Carboniferous and Permian deposits 

 of the Pacific province of North America and of China, India 

 and Brazil, explaining in an interesting way the geological events 

 which account for the correlations of the organisms of the several 

 regions. — Journ. Geol., vol. ii, pp. 187-204, Feb., March, 1894. 



8. The Crinoidea of Gotland. Pt. I. The Crinoidea inadu- 

 nata ; by F. A. Bather, pp. 182, Plates i-x. Kongl. Svenska 

 Vetenskaps-Akademiens Handlingar, vol. xxv, No. 2, Stockholm, 

 1893. — This work is not only a thorough review of the species of 

 Angelin's " Iconographia," but after a careful study of rich col- 

 lections made by Angelin and now in the Stockholm Museum, 

 the author has with exquisite delicacy developed the minute 

 structure of the species studied, and with the assistance of an 

 artist equally accurate with himself (Mr. J. Liljevall) has pro- 

 duced a monograph thoroughly up to the needs of modern science. 

 Among the more valuable additions to knowledge are the recon- 

 struction of the genus Pisocrinus, determining its true relations 

 with other Monocyclica ; the revision of the genera of Calceocri- 

 nidae based upon a full delineation of the skeletal elements ; the 

 account of the morphology of the genus Herpetocrinus ( = Myelo- 

 dactylus) ; the revision of the Inadunata, resulting in the abolish- 

 ing of the suborders Larviformia and Fistulata, and the erection 

 of the divisions Monocyclica and Dicyclica separated according 

 to the presence or absence of infrabasals. The Dicyclica are also 

 revised as the result of fuller knowledge of their ventral and anal 

 structures. h. s. w. 



