I902J CURRENT LITERATURE 147 



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regarded as a member of the flora can be tested. The classification is that 

 of Saccardo*s Syllogc Fungorum. The hst includes 370 genera and 1136 



I species. — J. M. C. 



Professor Aven Nelson ^ has prepared a Key to the common 

 flowering plants of the Rocky mountain region, to be used by elementary 

 classes of secondary schools in their first contact with the local flora. Such 

 keys are insisted upon by publishers, much to the discomfort of botanists. 

 But if the}* are to be published at all, they should be prepared by some one 

 familiar with the flora. For the region presented in the Key before us no 

 better selection could have been made than Professor Nelson, and every page 

 shows familiar field contact. A few hundred plants of the spring and early 

 summer are selected from the thousands belonging to the flora, and their 

 •descriptions and the keys are admirably simple and direct. Of course the 

 author hopes that the little book will serve in inducing the proper study of 

 the flora through the regular manuals. — J. M. C. 



C. H. OsTENFELD,^ Inspector of the Botanical Museum of the 

 University of Copenhagen, has undertaken to edit an illustrated arctic flora, 

 published in English, the first part of which has just appeared. At the 

 suggestion of Professor Warming, it was begun by the late Mr. O. Gelert, 

 who had associated Mr. C. H. Ostenfeld with him. In March 1899, Mr. 

 Celert died, but about half of Part I may be credited to him. The ferns and 

 seed plants of the arctic regions are recorded in many scattered lists, each 

 author using his own nomenclature, so that their study is quite troublesome, 

 This Flora Arctica includes all regions north of the limit of trees. A 

 prefatory bibliography cites about 95 titles. The pteridophytes are repre- 

 sented by 30 species; the gymnosperms by 3; and the monocotyledons by 

 '79» 54 of them being species of Carex. The printing and figures are 

 excellent, the descriptions clear and sufficiently full, and the keys very 

 simple.— J. M. C. 



Heald's Elemefitary Biology^ is a laboratory guide covering a year's 

 work for college students. It is unique in that there is as much space 

 devoted to plants as to animals. Directions for working out a specimen of 

 €ach of the great plant groups, including Schizophytes. Fungi, and Lichens, 



7 An analytical key to some of the common flowering plants of the Rocky 

 mountain region, pp. vii + 94. New York: D. Appleton & Co. 1902. 



Flora Arctica, containing descriptions of the flowering plants and ferns found 

 m the arctic regions, with their distribution in these countries. Part I. Pteridophyta. 

 %mnospermae, and Monocotyledones, by O. Gelert and C. H. Ostenfeld. Pub- 

 lished by the Carlsberg fund ; Copenhagen. 1902. 



'Heald, F.D., Laboratory manual of elementary biology. 8mo. pp. Yiii-l-287. 

 Binghamton (N. Y.) : Willard X. Clute & Co. 1902. 



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