81 Scientific Intelligence. 



northeast from Calgary and 185 miles south of Edmonton. It 

 is assumed that in the Red Deer and tributary valleys within the 

 area mapped there is an aggregate of ten feet of workable coal 

 over at least 6,000 acres ; this is figured as meaning a reserve of 

 over one hundred million tons. 



10. Potash in a new area of Texas, deposit of polyhalite found 

 at several levels in a well in Reagan County, Texas. — The dis- 

 covery of potash in notable amounts in a new area in Texas is 

 announced by the U. S. Geological Survey. This has been 

 brought to light through the analysis by the Survey of drill cut- 

 tings collected from the Santa Rita No. 1 well, drilled by the 

 Texon Oil and Land Co., in the southwest corner of Reagan 

 County. Most of the samples contained no potash worth noting, 

 but the samples which were taken from bailings at depths of 1150 

 to 1325 feet showed from 2.05 to 8.29 p. c, K 2 0. The richest of 

 the samples indicates 10.78 per cent of K 2 in the soluble salts 

 when one gram of the dry rock is dissolved in 100 cc. of water. 



III. Natural Htstorv. 



1. Arctic Alcyonaria and Actinaria; I, II, The Alcyonaria 

 of the Canadian Arctic Expedition, 1913-1918, with a revision of 

 some other Canadian genera and species; III. The Actinaria of 

 the Canadian Arctic Expeditions, with notes on interesting 

 species from Hudson Bay and other Canadian localities; by 

 A. E. Verrill. Pp. 161, with 31 plates. Ottawa, 1922.— These 

 papers from volume VII of the Report of the Canadian Arctic 

 Expedition, 1913-191S, contain a full systematic revision, with 

 specific descriptions and illustrations, of all the species of these 

 groups known from Arctic North American waters, including 

 some of the more characteristic forms from the Grand Banks. 

 Several new genera and species, are included, and the previously 

 perplexing confusion in synonymy is eliminated. 



Zoologists will long be indebted to Professor Verrill for bring- 

 ing together in this monographic form the accumulated results 

 of his studies for more than half a century on these groups. 



w. r. c. 



2. Genetics: An Introduction to the Study of Heredity: by 

 Herbert Eugene AValter, Revised edition ; pp. xvi, 351. New 

 York, 1922 (The Macmillan Company). — In the ten years that 

 have passed since the first edition of this widely used text-book 

 was issued discoveries of such profound significance have been 

 made as to necessitate extensive revision and the rewriting of a 

 large portion of the work. Several new chapters have been 

 added and a number of cleverly elucidative diagrams incorpo- 

 rated. The first edition was recognized as one of the most suc- 

 cessful elementary treatises of the subject of genetics that have 



