Nature . cludes IrctostaphylO! alpina, collected on Mt. Morven,Hierochloe borealis from Thurso, and a strange alien,Hymenaea Courbaril, known as the Wesl Indian locust, washed up by the Gull Strear :ar John-o-Groats. Mr. YV. Young, writing on the plants of the Glenshee district,Perthshire, reports the occurrence of Gentiana nivalis,Veronica alpina, and Cochlearia Groenlandica amongflowering plants on or near Glas Maol; among the liver-wort, gathered in the district were Cephaloziella Jackii,Lophozia socio, and Harpanthus Flotowianus. The volumecontains the latest of many papers by Mr. W. West
Nature . cludes IrctostaphylO! alpina, collected on Mt. Morven,Hierochloe borealis from Thurso, and a strange alien,Hymenaea Courbaril, known as the Wesl Indian locust, washed up by the Gull Strear :ar John-o-Groats. Mr. YV. Young, writing on the plants of the Glenshee district,Perthshire, reports the occurrence of Gentiana nivalis,Veronica alpina, and Cochlearia Groenlandica amongflowering plants on or near Glas Maol; among the liver-wort, gathered in the district were Cephaloziella Jackii,Lophozia socio, and Harpanthus Flotowianus. The volumecontains the latest of many papers by Mr. W. West andProf. 11. \V. West on algae, in which they describe thefresh-water algae collected in the Orkneys and Shetlands ;their list enumerates more than four hundred species -alarge number being desmids and diatoms—of which severalare new- species or varieties. The order Bombai at eaMalvaceae, includes, besidesable trees, of which the united by Hooker withthe baobab, several rental k- silk-cotton trees are a. prominent feature in the tropics. Two genera pass by thisname, Bombax and Ceiba, or, as it is known in thiscountry, Eriodendron. At Nassau, in the Bahamas, thereis a historic giant silk-cotton tree that is assigned toEriodendron anfractuesum in an enumeration of the plantsof the Bahamas. The illustration here reproduced is takenfrom Forest and Stream, January 13, and shows the re-markable formation of plank-like outgrowths, producedfrom the base of the trunk and the uppermost roots, thathave received the name of plank-buttresses. The plank-buttress is a peculiarity of trees growing in a tropicalclimate witli abundant rainfall. Mr. Audoin contributes an interesting paper on thehydrography of Lake Tchad to Geographie (vol. 5). Recent observations of the volume of tributary-streams and the area of the lake are analysed and appliedto the examination of the question of the gradual desic-cation of the region. Mr. Marquardsen contributes a valuable and com-plete summary
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
