30 LABORATORY DIRECTIONS 



B. OUTLINE OF FIELD AND LABORATORY STUDY TO BE BASED 

 UPON OBSERVED FACTS AND INFERENCES 



Throughout the report be careful to distinguish between ac- 

 tual facts that you observe and conclusion that you draw from 

 these facts. Wherever possible give a definite statement of just 

 what was observed then a statement of the conclusions that are 

 drawn from these observations. 



THE KINDS OF SEEDS SCATTERED 



In this study it is well to distinguish between the woody 

 plants as trees and shrubs and those which do not have a woody 

 stem, the herbs. 



1. How can you distinguish the planted vegetation from 

 that derived from other sources? Trees, shrubs, tree seedlings, 

 and herbs? 



2. List the trees which produce fruits eaten by birds. 



At demonstration table in laboratory examine fruits pre- 

 served in formalin to determine if they possess the characters 

 essential for distribution by birds. 



3. List the shrubs which produce similar fruits and examine 

 fruits at demonstration table. 



4. List the herbs in the same manner. 



At least 15 plants, including trees, shrubs, and herbs, must 

 be included in the above three lists. Aid will be given in the iden- 

 tification of these plants. 



EVIDENCE OF THE SCATTERING OF SEEDS 



I. Do you find wild cherry seedlings elsewhere than under 

 cherry trees ? Describe fully your observations, places where 

 found, under what kinds of trees, size of seedling, etc-. 



