REVIEWS AND CRITICISMS. 79 



generic distinction is maintained, as it is likely to be, by' pro- 

 gressive botanists, this newly-described species may be referred to 

 as Hesperopeuce Hookeriana. 



This alpine tree, suspected to be the type of a distinct species 

 when first discovered by Murray in 1855,* has been confounded 

 with the vastly larger trees of the very different sub-alpine Patton 

 Hemlock {Tsuga Pattonii Engelm) of the southern mountains 

 from the Cascade Range of Oregon, southward along the Sierra 

 Nevada to Southern California. I take particular pleasure by the 

 aid of added characters in restoring the tree to the rank of a 

 species as was done by Carriere.f 



In this connection it is interesting to note that the " Oregon 

 Committee" first published (in an obscure circular in 1852) our 

 southernmost species under the name of Abies Pattonii, so this 

 spelling of the specific name of the Patton Hemlock must be 

 adopted. 



REVIEWS AND CRITICISMS. 



L'Algerie; le sol et les habitants; Flore, Faune, Geologie, Anthro- 

 pologic, Resources Agricolcs & Economiques. Par Professeurs j. a. 

 battandier et n. l. trabut [Paris; Bailliere & Fils, 1898, 3.50 

 francs]. 



This little book gives us a very complete idea of the climate 

 and natural history of Algeria, in the small compass of 360 pages. 

 It does not attempt a complete list of the native plants known to 

 occur in the region, but wisely enumerates only those genera or 

 species which help to give a marked and characteristic feature 

 to the landscape. 



The climatic conditions divide the flora into three zones : 1st, 

 that of the Mediterranean littoral, known as the Tel, characterized 

 by evergreen trees and shrubs, various oaks, the olive, etc.; by an 

 annual, herbaceous spring -flora, which is at its best in April and 



* Abies Hookeriana, in Edinb. New Phil. Journ., new series, 289, t. 9, 

 f. 11-17, 1855. 



f Tsuga Hookeriana, in Trait. Conif. nouv. ed. 252, 1867. 



