REVIEWS 125 



PLANTS OF NOVAYA ZEMLYA continued. Jou>->i. Bot., pp, 

 468-474. 



CERASTIUM ARCTICUM, LANGE. By F. N. Williams. Journ. 

 Bot., p. 493. Is a reply to Mr. Marshall's note on p. 38, adhering 

 to the view that C. arcticum is not a distinct species. 



JUNGERMANIA OBTUSA, LlNDB., IN BRITAIN. By W. H. 



Pearson. Journ. Bot., p. 493. Records another addition to 

 British Liverworts, by Mr. S. Macvicar, from West Inverness. 



TRANSACTIONS OF THE P.S.N.S. Vol. ii. part 6 contains: 

 Preliminary List of Perthshire Mosses, by R. H. Meldrum. Plant 

 Associations of the Tay Basin, by R. Smith. The Geological Factors 

 in the Distribution of the Alpine Plants of Perthshire, by P. M'Nair. 



EXCURSION OF THE SCOTTISH ALPINE BOTANICAL CLUB TO 

 KILLIN IN 1897. By William Craig, M.D., F.R.S.E. Trans. Edin. 

 Bot. Soc., December 1897, xxi. pp. 104-109. Many of the alpine 

 plants of the Breadalbane hills were gathered, but no novelties are 

 recorded. 



ASTRAGALUS ALPINUS, ALBUS. By Robert Lindsay. Trans. 

 Edin. Bot. Soc., December 1897, xxi. p. 1 17. Records occurrence of 

 white flowers on plants brought in June 1896 from Ben Vrackie. 



MEASUREMENT OF THE GIRTH OF CONIFEROUS TREES AT 

 BRAEMAR IN 1894. By R. Turnbull, B.Sc., and Percival C. Waite. 

 Trans. Edin. Bot. Soc., December 1897, xxi. pp. 87-94, with plate 

 of curves. This paper gives measurements of radii, diameters, and 

 girths of trees blown down in November 1893. 



THE DIAMETER- INCREMENT OF THE WOOD OF CONIFEROUS 

 TREES AT BRAEMAR IN RELATION TO CLIMATIC CONDITIONS. 

 By R. Turnbull, B.Sc. Trans. Edin. Bot. Soc., December 1897, xxi. 

 pp. 94-104, with plate. 



APODYA LACTEA, CORNU (LEPTOMITUS LACTEUS, AGARDH.), 

 Described by R. Turnbull, B.Sc. Trans. Edin. Bot. Soc., December 

 1897, xxi. pp. 109-113, with plate. From streams flowing into the 

 Spey. The relation of the fungus to organic impurities in water is 

 discussed. 



REVIEWS. 



THE CAMBRIDGE NATURAL HISTORY. BIRDS. By A. H. 

 Evans, M.A. (London : Macmillan and Co., Ltd., 1899.) 



Mr. Evans's welcome volume forms the ninth of " The Cambridge 

 Natural History," and is the fourth issued of that admirable series. 



The author has evidently realised the fact that other recently 

 published works more especially Professor Newton's masterly 



