UNIVERSITY OF COLORADO MOUNTAIN LABORATORY 95 



position in affording opportunity for the study of the rich flora and fauna 

 of a mountain district. Especially favored in climate and geographical 

 position it places the student where he must appreciate the relationship 

 which organisms bear to their environment. 



The following investigations 1 were undertaken by members of the 

 1909 party: 



1. Plant Formations of Boulder Park and Vicinity — to be a general account of the 

 larger ecological associations. 



2. Pondside Vegetation — a continuation of work started two years ago by the pro- 

 fessor in charge and the instructor. 



3. The Lodgepole Forest — a study of the distribution of the lodgepole pine with rela- 

 tion to slope, exposure, etc.; also the associated trees and herbaceous plants of 

 the forest. 



4. An Ecological Cross-Section of Boulder Park — examination of ten typical points 

 as to soil moisture, soil temperature and characteristic species of plants. 



5. The Insect Visitors of Pentstemon — collection and study of the different insects 

 and their importance in pollination. 



6. The Habits of the Salamanders of Park Lake — observations on breeding, relation 

 to temperature of the water, behavior during night and day. 



7. Ants of Boulder Park — study of habits, abundance etc. Preparation of artificial 

 key for their identification. 



1 The unrivalled opportunities for investigation of botanical problems in Colorado are set forth in a 

 paper entitled "Botanical Opportunity in Colorado" by the present writer published in the University of 

 Colorado Studies, Vol. VI, pp. 5-10, December, 1908. 



