50 



and finds that they agree with the figures pubhshed by Lamouroux 

 in showing only a Zonaria (the Gymnosoriis variegatus of J. 

 Agardh), so that the name " Padina variegata (Lamx.) Hauck," 

 employed by Borgesen, would seem to be vulnerable on the ground 

 of historical fact as well as on the ground of nomenclatural theory. 



Borgeson in his general discussion of the Phaeophyceae refers 

 to "the well-known fact that the northern brown-algal vegetation 

 reaches a luxuriance which greatly surpasses that in the tropics." 

 In the Faeroes he found 73 species of brown algae; in the Danish 

 West Indies, as already remarked, the recorded number is 40. 



The text of "The Marine Algae of the Danish West Indies," as 

 may be inferred, is in English, which will render this helpful work 

 more widely useful and more readily available to American stu- 

 dents than might otherwise have been the case. Preliminary 

 papers dealing with the Rhodophyceae of the Danish West Indies 

 have already been published by Borgesen and the appearance of 

 Part 3 of the larger work, taking up the red algae of these islands 

 in systematic sequence, will be awaited with interest. 



Marshall A. Howe 



Calkins 's Biologry'^ 



As stated in the preface, the work before us is based upon the 

 course outlined in Sedgwick and Wilson's General Biology, and 

 is prepared primarily for the purpose of meeting the need, felt at 

 Columbia University, for a work along similar lines, but covering 

 about thirty class exercises and as many laboratory periods. The 

 course is based upon a study of types, chosen with a view to their 

 serving "as points of departure for various lines of development 

 in subsequent course work." The plan of the book is quite 

 different, however, from that of Sedgwick and Wilson's text. 

 Organisms of one cell, organisms of tissues, and organisms of 

 organs are taken up in the order named, and "emphasis is laid at 

 the outset on cellular activities, especially on the importance of 

 enzymes in metabolism and development, while animal differ- 

 entiation for the performance of primary functions of protoplasm 

 is the main theme of the entire course." 



* Biology. By Gary N. Calkins, Ph.D., Professor of Protozoologj^ in Columbia 

 University. New York. Henry Holt and Company, 1914. 



