62 



took in the kelp-groves near Point Defiance. Further oppor- 

 tunity to study the forests of the northwest was given at Medford, 

 Oregon, where for three days the excursionists were guests of the 

 Medford Commercial and University Clubs. The principal 

 attraction here was Crater Lake, situated eighty miles northeast 

 of Medford at the crest of the Cascade Mountains, and regarded 

 by geologists as one of the wonders of the world. The journey 



Fig. 3. From left to right: Professor C. Schroter, Professor A. Engler, Dr. E. 

 Riibel. Photograph taken near Minnehaha bj' Dr. H. L. Shantz. 



from Medford to the lake was made by automobile. En route, 

 there were traversed first the fertile agricultural lands of the 

 Rogue River valley (altitude about i ,400 feet) , where the natural 

 vegetation consists mainly of grassland alternating with oak {Q. 

 Garryana, Q. calijornica) and chaparral. The foothills are 

 sparsely timbered with Pinus ponderosa and oak. With increas- 

 ing elevation the forest becomes denser, and thirty-five miles 

 from Medford the road enters the Crater Lake National Forest, 

 which is heavily timbered with Pinus ponderosa, P. Lamhertiana, 



