REVIEWS 263 



The continued repetition of certain specific names in different genera, 

 is of course acceptable under the rules of nomenclature, but it is exceed- 

 ingly troublesome to those who are obKged to use the pubHcations; it 

 often happens that subsequent authors transfer species from one genus 

 to another without cross references and difficulties are multiplied enor- 

 mously. The specific names, washingtonensis , washingtoniana, cow- 

 litzensts, olequahensis , and vaderensis have been used over and over 

 again in Washington paleontology, and it is with regret that we notice 

 the present authors have added to this assemblage. 



Several typographical errors have been noted but the only one seen 

 which is likely to give trouble is on page 34, where Turritella washing- 

 toniana is referred to Plate XI, figures 13, 14, 16. The plate number 

 should read XII. 



G. Dallas Hanna 



The Story of the North Star State. By D. E. Willard. St. Paul, 

 Minnesota: Webb Publishing Company. Pp. 395, Figs. 156. 

 This work belongs to a new and increasingly important class of 

 geologic literature, whose avowed purpose is to present scientific facts 

 and principles in such simple language that the intelligent general reader 

 may assimilate them. That the author has succeeded admirably in 

 carrying out his aim is the belief of the present reviewer. The geologic 

 history of Minnesota, particularly that of glacial and post-glacial times, 

 has been made into an interesting story without any loss of scientific 

 accuracy. 



A. H. B. 



Ahrege de Geographie physique. By Emmanuel de Martonne. 



Paris: Librairie Armand Colin, 103 boul. St. Michel, 1922. 



Pp. ii+356, pis. 8, figs. 100. 

 As its name implies, this is an abridgment of a larger work by the 

 same author, namely his Traite de Geographie physique (ist edition 1909, 

 3d edition 1920). Designed primarily as a textbook, it is addressed to 

 the general reader as well as to the student. The plan of outline is the 

 same as that of the Traite but the method of presentation is in general 

 different. Brevity has been secured by 1' ^ving out as far as possible 

 concrete examples illustrating the general laws. Not wishing to treat 

 all the questions summarily, the author has chosen the most important 

 or the simplest, setting them forth in a manner as complete as the 

 limited space permitted. 



