230 
THE MAMMALS OF MOUNT MAZAMA. 
Large Pale Bat. Antrozous paUidus^ (Le Conte). 
Three specimens of this large, handsome long-eared bat were 
sent me from Fort Klamath some years ago by Major Charles E. 
Bendire, who collected them there in 1883. They belong to the 
large California form which ranges northward on the east side of the 
Cascades to the Dalles. 
Department of Agriculture^ Washington, D. C. 
xa. 5, ifisb dommission JnvestiGations at Crater XaF?e. 
BARTON WARREN EVERMANN, PH. D. 
Ichthyologist of the United States Fish Commission. 
In the spring of 1896 the U. S. Commissioner of Fish and 
Fisheries received a request from the Mazamas and also from public 
spirited citizens of south-western Oregon that a plant of fish be 
made in Crater Lake. 
No one seemed to know whether the physical and biologic con- 
ditions existing at Crater Lake were such as would permit fish to 
thrive in it. Before acting upon the request it was, therefore, 
thought advisable to learn something of the character of the Lake. 
I was therefore directed by the Commissioner to make such an ex- 
amination of the Lake as would determine its fitness for fish life. 
The investigation was conducted chiefly along four lines, viz: 
the character of the water as to purity, temperature, etc., the na- 
ture and amount of fish-food found in the Lake, the presence of 
other animal and vegetable life in and about the Lake, and the exis- 
tence of bottom suitable for spawning beds. 
