He views — Hall and Clarke — On the BracMopoda. 279 



taining Mammotli remains, and this is capped by a peaty layer 

 supporting the vegetation of the region. 



Another peculiar feature of the stagnant margin of the Malaspina 

 glacier is the presence of numerous lakelets from 30 to 60 yards 

 in width and bounded by steep walls of ice from 50 to 100 feet in 

 height. These lakelets are supposed to have originated by the 

 melting back of the walls of crevasses. 



Mr. Russell further describes the geology of the Chaix Hills, 

 a range from 8 to 10 miles in length and about 3000 feet in height, 

 which project from the sea of ice between the coast and Mount 

 St. Elias. The strata have a gentle dip to the north, and appear 

 to be between 4000 and 5000 feet in thickness. They consist 

 throughout of a sandy clay, in which are numerous stones and 

 boulders, up to 8 feet in diameter ; some of these latter are polished 

 and striated. In the finer beds moUuscan shells occur, belonging 

 to several species which still exist in the adjoining ocean. These 

 beds are evidently formed of morainic materials deposited about 

 the extremity of a glacier which terminated in the ocean, and 

 Bimilar beds are probably now being deposited in the ocean in 

 front of the western lobe of the Malaspina glacier. The Samovar 

 hills, more to the north-east than the Chaix range, likewise consist 

 of stratified morainic material. Many of the boulders in these 

 deposits are of various kinds of crystalline rocks, which must have 

 been brought from the north by glaciers. This great thickness of 

 stratified morainic material, originally laid down beneath the sea, 

 and now in part raised to an elevation of over 3000 feet, will give 

 an idea of the long period of time which has elapsed, and of the 

 great physical changes which have taken place since glaciers first 

 left traces of their movements in these regions. 



The maps and reproductions of photographs which accompany the 

 Report afford realistic pictures of the salient features of the region 

 described. G. J. H. 



III. — Eleventh Annual Report for the Tear 1891 of the State 

 Geologist, Transmitted to the Legislature of New York, 

 January, 1892. By James Hall, State Geologist. With an 

 Illustrated Handbook of the Brachiopoda. 8vo. pp. 300, 22 

 Plates, 286 Woodcuts. James B. Lyon, State Printer. (Albany, 

 1892.) 



AN early copy of the Report reached us last month — a delay 

 in publication alike unjust to the authors, and a loss to 

 the scientific public, as this work is one of great general utility, 

 comprising the first part of a new illustrated handbook of the 

 Brachiopoda. Besides the formal Report and Catalogue of additions 

 to the collections of the State Museum of New York, the volume 

 contains a list of the types and figured specimens of the Crustacea in 

 the palseontological collections, and a paper by Prof. John M. Clarke 

 on Cordania — a proposed new genus of the Trilobita — which can be 

 no longer referred to Barrande's misnamed genus Phcston, to his 

 subsequently substituted Flmtonides, nor to Corda's Prinopeltsi. 



