1883.] NATURAL SCIENCES OF PHILADELPHIA 139 



the north side of the lake. The rock of which it is composed 

 differs from those of the principal ranges, in being a finely bedded 

 volcanic conglomerate mud. The same material forms bluffs 

 forty-five miles eastward in the desert. During the season of 

 1882 the waters of Silver Lake rose higher than had been pre- 

 viously known. It is probable that these lakes are rising, as is 

 the case with Pyramid Lake. A comparatively small elevation 

 would connect the waters of Silver Lake with Summer Lake, 

 eighteen miles distant, and those of Summer Lake with the 

 Chewaucan River, seven miles distant. This would convert the 

 Chewaucan Swamp into a lake, and connect the Abert Lake with 

 the series. 



Goose Lake is thirty miles in length and about ten miles in 

 width. It is bounded on the east and west by eruptive moun- 

 tains of no great elevation near the lake, but which rise gradually 

 to a considerable height, especially to the eastward. To the 

 north and south the valley of the lake continues for several miles. 

 It is cut off to the north by the watershed of the Chewaucan, and 

 to the south bj- that of Pitt River. The scenery of its banks is 

 tame as compared with that of some of the other lakes, but 

 presents nevertheless many elements of beauty. It is shallow 

 for a long distance from its northern and eastern shores. It 

 abounds in fishes and water-birds. I fished for a day with hook 

 and line without success, but procured a good collection of fishes 

 by another method. I found numei'ous specimens both fresh and 

 dry, which had been dropped by fishing-birds on or near the shore. 



The great or Upper Klamath Lake is thirty-two miles long, and 

 of irregular width, and is said to be twelve miles across its 

 widest part. Its western shore is the base of the Cascade Moun- 

 tains, and its eastern shore is bordered b}- a low range of eruptive 

 hills. Both shores are wooded ; and the scenery, though it lacks 

 the rugged grandeur of that of Warner's and Abert's Lakes, is 

 highly picturesque. The symmetrical proportions of Mount 

 Pitt are ever visible on its eastern shore, while the more central 

 peaks of the Cascades are in view from its northern extremity. 

 It is fed by several streams, the most important of which is the 

 Williamson's River, which enters it from the east. This has a 

 considerable flow of water. The Link River, which connects the 

 Upper and Lower Klamath Lakes with the Klamath River, is a 

 wide and rapid stream containing much water. 



