of interest, and is clearly written. The recent speculations upon the 

 relation of angiosperins and gymnosperms ; the connection between 

 monocotyledons and dicotyledons, are given due attention. In the 

 ■discussion of the question of the possible monocotyledonous affinities 

 of Podophyllum, it may be said that the suggestion that the two appar- 

 ent cotyledons are possibly one, morphologically, was not suggested 

 by Holm. Much stress is laid upon the somewhat dubious "Pro- 

 angiosperms " of the lower Cretaceous. These are supposed to have 

 arisen from some eusporangiate filicineous stock and to have given 

 rise, independently, to the monocotyledons and dicotyledons. If we 

 are to assume that the angiosperms are monophyletic, it is considered 

 that the monocotyledons are probably derivations of the dicotyledons. 

 The recent mutation theory of De Vries is also given due attention. 



Prof. Jeffrey's contribution of two final chapters on the vascular 

 system has some value in itself, but comparatively little bearing upon 

 the morphology of angiosperms. Of twenty pages, less than six deal 

 with angiosperms, and of thirty -three figures only five represent this 

 group. These chapters seem to us unnecessarily loaded with tech- 

 nical terms, and are by no means easy reading. 



D. H. C. 



Notes. — No. 25 of the new series of "Contributions from the 

 •Grey Herbarium of Harvard University," issued as No. s of the 



of Proceed 



! Academy of Arts 



Sciences, on Sept. 25, is an important paper by Greenman on Mexi- 

 can and Central American Angiosperms, mostly of recent collection. 



An account of an ecological study of Big Spring Prairie, Wyandot 

 County, Ohio, by Bonser, is published as no. 7 of the Special Papers 

 of the Ohio State Academy of Science. 



Vol. 3, fascicle i, of Urban's Symbolce. AntiUance, dated September 

 16, contams the first part of a "Flora Portoricensis," by Urban. 



Fascicle 126 of the Flora Brasiliensis, issued in December, 1902, 

 concludes Vol. 3, part 5, of the work, dealing with orchids. 



The long-delayed number needed to complete the 1901 volume of 

 the Bulletin de la Societk Botanique de France, dealing with fh^ toot 



|vii dccouni or tne vegetation of Corsica, with photograms, by 

 Rikh, IS published in the Viertel-Jahrsschrift der Naturforschenden 

 ■Gesellschaft in Ziirich, of Apr. 1 1, iqo^ 



