LAWS OF ENVIRONMENTAL CHANGE 89 



WARMING, E. (Trans, by P. GROOM and I. B. BALFOTJR.) 

 1909. (Ecology of Plants, pp. 422. Oxford. 



A treatise on the general principles of plant ecology, 



and an index to the literature. 

 ZON, RAPHAEL. 



1906. Principles Involved in Determining Forest Types. 



Proc. Soc. Amer. Foresters, Vol. I, pp. 179-189. 

 Discusses the sequence of change in the forest. 



OSTENFELD, C. H. 



1908. On the Ecology and Distribution of the Grass-Wrack 

 (Zostera marina) in Danish Waters. Rep. Danish 

 Biol. Sta. to Board of Agriculture, Vol. XVI, 1908. 

 Trans, from the Fiskeri-Beretning for 1907, pp. 1-62. 

 An important paper showing the controlling relation 

 of marine vegetation upon animal associations and 

 particularly the fish of the coast. References to 

 related zoological papers. 

 MOORE, J. E. S. 



1903. The Tanganyika Problem, pp. 371. London. 



On pp. 107-119 Moore describes the invasion and 

 succession of vegetation upon alluvial flats, recently 

 drained. A graphic account of forest invasion. 

 Apparently a little known study. 

 ERNST, A. (Trans, by A. C. SEWARD.) 



1908. The New Flora of the Volcanic Island of Krakatau. 



pp. 74. Cambridge. 



A study of the invasion of vegetation upon a new land 

 surface formed by volcanic activity. Such studies 

 as this aid one in breaking away from the older 

 static view of vegetation and in seeing its more vital 

 aspect. 

 VAUGHAN, T. W. 



1911. The Geological Work of Mangroves in Southern 

 * Florida. Smithsonian Miscell. Coll. (Quart. Issue), 



Vol. LII, pp. 461-464. 

 Plants as agents in the formation of animal habitats. 



