The United States Bureau of Plant Industry and the University of California 

 Division of Forestry aided in the determination of seeds found in the cheek 

 pouches of chipmunks. The United States Bureau of Biological Survey determined 

 the crop and gizzard contents of a number of birds. Dr. Harvey M. Hall identified 

 numerous plants submitted to him. 



Much information and many vertebrate specimens have been obtained from 

 Mr. Donald D. McLean, whose home is at Dudley, on Smith Creek, six miles (air- 

 line) east of the town of Coulterville. Mr. McLean's parents and uncle, Mr. and 

 Mrs. John L. McLean and Mr. Walter Dudley, also aided us in many ways while 

 field work was going on in their neighborhood. 



[vii] 



