ECOLOGICAL CROSS-SECTION OF BOULDER PARK 



287 



TABLE III 



Relative Humidity of Air One Foot above Surface of Soil at Various Stations 

 NEAR Tolland, Colo.. 1909 



TABLE IV 

 Sunlight Percentage at Various Stations near Tolland, Colo., 1909 



Summary 



The material presented in the foregoing pages consists of records 

 of observation at ten stations in Boulder Park, a mountain valley 

 in Gilpin County, north-central Colorado (altitude about 9,000 ft.). 

 Lists are given of the principal species of plants at each station, 

 together with a tabular statement of soil moistures, soil temperatures, 

 relative humidity and light intensity. The stations selected show- 

 conditions in a lodgepole-pine forest, in dry grassland, along railway 

 cuts, in a meadow, in an aspen grove and on a sagebrush ridge. 



