PETHyiiRiDGE & PjJAEGER— Vcfjetation South of Buhlin. 131 



4. Engleb, a., ijnd 0. Deude: 



Die Vegetation der Erde. V. Die Heide Norddeutsclilands. 

 Bearbeitet Ton P. Gracbner. Leipzig: Engelmann. 1901. 



5. Smith, W. G. : 



The Origin and Deyelopment of Heather Moorland. Scottish 

 Geographical Magazine, vol. xviii., p. 587. 1902. 



6. GHAEBNER, P. : 



Potanischer Eiihrer durch jS'orddeutschland. Perlin : Porn- 

 traeger. 1903. 



7. Smith, Eobert : 



Plant Associations of the Tay Pasin. Proc. Perthshire Soc. of 

 Natural Science, vol. ii., part 6. 1898, 



8. Smith, Eobeet : 



Plant Associations of the Tay Pasin. Part 11. , witli map. 

 Trans. Perthshire Soc. of Natural Science, vol. iii., part 2. 

 1900. 



9. Smith, Eobert : 



Potanical Survey of Scotland. Scottish Geographical Magazine. 

 July and August, 1900. 



10. Smith, Eobert : 



Potanical Survey of Scotland. I. Edinburgh District, with 

 coloured map. II. JS'orthern Perthshire, with coloured map. 

 Edinburgh : J. Partholomew & Co. 1900. 



1 1 . Flahatjlt, Charles : 



Essai d'une Carte Potanique et Forestiere do la France. 

 Annales de Geogiaphie, '^o. 28, p. 289, 1897 (avec une 

 carte). 



12. Smith, William G. : 



A Potanical Survey of Scotland. Scottish Geographical 

 Magazine, March, 1902. 



13. Smith, William G. : 



Botanical Survey of Scotland, iii. and iv. : Forfar and Fife. 

 With two maps. Scottish Geographical Magazine, vol. xx., 

 1^0. 12, 1904 ; vol. xxi., Nos. 1, 2, and 3. 1905. 



14. Smith, Wm. G., and C. E. Moss: 



Geographical Distribution of Vegetation in Yorkshire. Geogra- 

 phical Journal, April, 1903. 



