18'J 



brought together, in concise but comprehensive manner, general 

 accounts of each of the orders of plants, accounts especially valu- 

 able and authoritative, since they are first prepared by specialists 

 in those orders and then made to conform to the rest of the 

 work by passing through the hands of the editors. The present 

 book is a translation of a portion of this work. Part I, following 

 the preface and an introduction, illustrating the use of the analytic 

 key, is a most excellent account of the principal features, espec- 

 ially the rtiorphology of the order. Part II is an analytically ar- 

 rayed conspectus of the tribes and genera, with descriptions; the 

 whole interspersed with remarks upon the more important scien- 

 tific or economic facts, and copiously illustrated with good figures. 

 The translators have combined a thorough understanding of 

 technical German with a special knowledge of grasses, and the 

 resulting translation is accurate, clear and scientifically correct. 

 The only point of criticism is an occasional too close adherence to 

 the original idiom. The title might better have been simply 

 "The Grasses," for in "Echte Griiser " the adjective serves only to 

 distinguish the name from others containing the same root- word, 

 as "Riedgraser" (sedges). The EngHsh terminology does not 

 require the distinguishing mark. 



The book will be a valuable aid, especially in method, to- the 

 American student of szrasses. F. V. CoVILLE. 



Tillaiidsia amcthystina. J. G. Baker. (Bot. M 



jiuviatilis. Hi 



i> 



De 



velopmcnt of. Wm. A. Sctchell. (Proc. Am. Acad. Arts 



and Sci. xxv. 53-68. figs. 1-15 ; reprinted). 



The rediscovery of this long-lost fresh-water alga by our 

 friend Mr, Isaac Holden and several other New England collectors, 

 and the excellent description and figures by Mr. Sctchell, will 



M 



searching for it. 



The comparison of Tuomcya with Batrachospct 

 mtim and Lcmanea prove them to be closely allied. E. G. B. 



Proceedings of the Club, 



June ioth, 1890. 



The Vice-President in the Chair, and 21 persons present. 

 The following persons were elected Corresponding Members 



