604 General and Applied Biology 



16. List animals which are rather generally distributed throughout our country. 

 Describe the methods of dispersal of such animals as the European corn 

 borer, Mexican bean beetle, the English sparrow, and other forms with which 

 you are familiar. 



1 7. What is the effect of quarantine on the dispersal of organisms ? 



18. What is the effect of better methods of transportation by man on the dis- 

 tribution of organisms ? 



19. List ten plants distributed in a certain area, and tell specifically why they 

 are distributed there rather than elsewhere? 



20. Give all the reasons you can for the particular distribution of such plants as 

 the instructor may suggest. 



SELECTED REFERENCES 



Braun-Blanquet: Plant Sociology, McGraw-Hill Book Co., Inc. 



Cain: Foundations of Plant Geography, Harper and Brothers. 



Campbell: Outline of Plant Geography, The Macmillan Co. 



Clements and Shelford: Bioecology, John Wiley & Sons, Inc. 



Daubenmire: Plants and Environment, John Wiley & Sons, Inc. 



Jones: Economic Geography, The Macmillan Co. 



Oosting: Study of Plant Communities, W. H Freeman & Co. 



Sears: Deserts on the March, University of Oklahoma Press. 



Wallace: The Geographical Distribution of Animals, London, The Macmillan Co. 



Weaver and Clements: Plant Ecology, McGraw-Hill Book Co., Inc. 



Wulff: Historical Plant Geography, Chronica Botanica Co. 



