Geology and Mineralogy. S3 



5. A List of new Crystal Forms of Minerals; by Herbert P. 

 Whitlock. Bull. Amer. Museum Nat. History, vol. 46, pp. 

 89-278— Dr. Whitlock in 1910 published a list of new crystal 

 forms in the School of Mines Quarterly (31, p. 320, 32, p. 51) ; 

 this included forms described subsequent to Goldschmidt 's Index 

 (1891). The same author has now in this pamphlet of about 190 

 pages covered the entire period from 1891 to 1920, and his ardu- 

 ous labors will be highly appreciated by all interested in this 

 subject, one that no work on mineralogy, however comprehensive, 

 can expect to cope with. The accepted letter, the Goldschmidt 

 and Miller symbols, locality, and original reference are all given. 



6. Handbook and Descriptive Catalogue of Gems and 

 Precious Stones in the U. S. National Museum; by George P. 

 Merrill, assisted by Margaret \V. Moodey and Edgar T. 

 \Vherry. Pp. 225, with 11 plates, 26 text figures. (Bulletin 

 118, U. S. National Museum.) — Dr. Merrill's contribution will be 

 welcomed by all interested in precious stones, particularly those 

 of American origin. The collection, even if ' ' poorly balanced, ' ' 

 is large and worthy of careful study. The "Isaac Lea Collec- 

 tion" forms a very important part; this originated with the 

 bequest of Mrs. Frances Lea Chamberlain of the collection of her 

 father, Dr. Isaac Lea. This has been made more valuable by the 

 further gift from Dr. L. T. Chamberlain of numerous specimens 

 and (on his decease) a bequest for the increase of this collection. 



7. Virginia Geological Survey; Thomas L. \Yatson, Director. 

 Bulletin XVII. The Geology and Coal Resources of Russell 

 County; by Chester K. Wentworth, with a chapter on the For- 

 ests of Kussell County by J. W. 'Byrne. Pp. X, 179 ; 28 plates 

 (3 in pocket), 16 figures. Charlottesville, 1922. — Russell County 

 is in the southwestern part of the State and the part here 

 described is a belt, 3 to 5 miles wide, along the northwestern 

 border. Its resources are estimated at 706,000,000 tons of recov- 

 erable coal ; in 1918 the output was very nearly 2,000,000 tons, 

 having a value of over $5,000,000. 



8. The Topographic and Geological Survey of Pennsylvania; 

 George H. Ashley, State Geologist.— Bulletins 6, 9, 38-42 have 

 been received (mimeographed). Xo. 40, by F. B. Beck, is on the 

 white clay deposits at Saylorsburg, Monroe Co.; the others (see 

 3, 305, 384) deal with various aspects of the coal situation. 



9. Geology of Drumheller Coal Field, Alberta ; by John A. 

 Allan. Pp. 72 with index; 17 plates including a large colored 

 geological map of the Drumheller district in pocket. — This dis- 

 trict is the largest producer of coal in Alberta. Within the 75 

 square miles mapped there are 28 mines and the annual output is 

 over one million tons. The coal seams and associated sedimen- 

 tary beds belong to the Edmonton formation, the uppermost 

 member of the Upper Cretaceous. The area is 8o miles east- 



