188 ARTICLES IN JOURNALS. 



tion, but is somewhat technical at times ; thus such a phrase as 

 " modulus of elasticity " should not be used without explanation. 

 Three specimens of timber grown under different conditions are 

 figured. Chapter xi. contains a short general account of the 

 procedure in the cultivation of the tree. The " natural shape is 

 that of a wide- spreading, short-stemmed mushroom ,, ; this is 

 realised in the open, but the forester, by planting it among other 

 trees, such as beech or spruce which, while keeping the light from 

 the lower parts, will not overtop it, is able to get a long clean 

 stem before the crown extends. The rest of this chapter is taken 

 up with a brief survey of a few of the diseases to which the tree is 

 subject ; those mentioned are well illustrated. In the discussion of 

 the relationships of the genus, which, according to DeCandolle, 

 contains something like three hundred species, the general reader 

 will perhaps be surprised to find that the facts of present distri- 

 bution and the evidence from fossil remains go to show that the 

 "British 1 ' oak originated, along with its European congeners, in 

 the far east, and, passing westwards, at last reached Britain, at 

 that time the western extremity of the mainland. 



We shall be glad to have more books of this kind dealing with 

 other botanical types. A. B. Rendle. 



ARTICLES IN JOURNALS. 



Annals of Botany (April). — W. A. Setchell, ' Species oiDoassansia ' 

 (2 plates). — D. H. Campbell, ' Pro thallium and embryo of Osmunrfa 

 Claijtoniana & 0. einnamomea' (4 plates). — J. G. Baker, 'Vascular 

 Cryptogamia of Island of Grenada.' — H. M. Ward, ' Characters 

 employed for classifying Schizomycetes. , — W. B. Hemsley, Melon- 



anthus. — Id., Trematocarpus. 



fenestr 



H. Wager, * Nuclei of Hymenomycetes/ — A. W. Bennett, * Algo- 



logical Notes.' 



Bot. Centndblatt. (Nos. 16-18). — V. L. Sandoval, ' Zur Kennt- 

 niss der Gattung Roxbunjhia ' (1 plate), — (No. 18) F. Reinitzer, 

 4 Ueber den GerbstoffbegriflV — C. Fritsch, 'Die Gattungen der 

 Caprifoliaeeen.'— (No. 19). N. Rusche, ' Ueber Kohlenbildung.' 

 (:So. 20). F. v. Mueller, 'Note on Sir W. Macgregor's Botanical 

 Collections.' — R. v. Wettstein, ■ Ueber die Systematik der Sokmacea.' 

 —(No. 21). H. Solereder, ■ Ueber die Verwandtschaftverhaltnisse 

 der Acanthaceen-Gattung Somalia Oliv.' 



Bot. Gazette (April). — G. E. Stone, ■ A simple self -registering 

 auxanometer ' (1 plate). — C. MacMillan, ' Classification of Meta- 

 phyta.' — B. 1). Halsted, ( Fungi common to wild and cultivated 

 plants.' — J. M. Holzmger, 'Identity of Asclepias stmophylla & 

 Acetates auHculata.'—k. Commons, 'Bartram's Oak/ — E.E.Gayle, 



1 Spines of Cenchrus tribuloides.' 



Botanical Magazine (May).— Lilium Lowii Baker, LHdymocarpiis 

 lacunosa Hook.f., spp. nn. 



