386 GEOLOGICAL SURVEY OF THE TERRITORIES. 



tain amount of negative evidence appears, which may be of value in 

 future deductions. I append a list of the localities, remarking upon ele- 

 vation and so forth, at which collections were made. The absence of 

 any camp, as Nos. 12-16, from this list, does not necessarily imply that 

 I was idle, but that nothing of importance reached home from that 

 locality. 



LIST OF LOCALITIES FROM WHICH SPECIMENS WERE BROUGHT HOME. 



Camp 9 : Hot Sulphur Springs, Middle Park, July 31 to August 5. Ele- 

 vation 7,725 feet. A broad, open valley, containing hot and cold 

 springs of various mineral-waters. 



Camp 9-10 : Grand River Valley, August 5. About 7,500 feet. Grassy 

 prairies and river-terraces of coarse gravel covered with sage-brush, 

 with but little timber, except along some portions of the river-banks. 



Camp 10 : Mouth of Blue River, August 6-8. About 7,500 feet. High 

 river-terraces. Cottonwoods and alders along the river and about 

 springs in the neighboring hills. 



Camp 10-11 : Blue ''River Valley, August 8. 7,500-8,500 feet. Same 

 general characteristics. 



Camp 11 : Ute Peak, Blue River Valley, August 8. About 8,500 feet. 

 Springy ground by a cold streamlet, with abundance of small timber 

 and luxuriant herbage. Many shells were collected on a wooded hill 

 2,000 feet higher than the camp. 



Camp 17 : Head of San Luis Valley, August 14. About 8,000 feet. 

 Luxuriant grass and herbage; large pines and spruces. Water in 

 plenty. 



Camp 17-18 : San Luis Valley, August 15. 7,600-7,200 feet. Distance 

 thirty miles, mostly Artemisia plains, very dry and dusty. The weather, 

 which had been rainy, now began to be clearer, with hot noondays 

 and cool nights. 



Camp 18 : Springs, Saguache, August 16. 7,700 feet. Edge of dry plains. 

 The springs come copiously from under a volcanic bluff, and flow into 

 a marsh, which drains into Saguache Creek. 



Camp 19 : Saguache Greek, August 16. 7,748 feet. Five miles beyond 

 Camp 18, on the banks of the above stream, which is a tributary of 

 the Bio Grande and waters a fertile region. Thousands of cattle are 

 herded hereabouts. 



Caivip 20 : Twenty miles icest of Saguache, August 17. About 9,000 feet. 

 Volcanic canon. 



Camp 21 : Los Pinos Lndian agency, August 19-24. 9,290 feet. A fer- 

 tile plain watered by two creeks, and surrounded by hills, affording 

 plenty of rain. The camp was placed among a grove of various trees 

 by a little rocky stream. We remained a week at this point; but my 

 time was largely occupied in studying the traits of the Ute Indians, 

 whose southern agency is here. 



Camp 22 : White Earth Greek, August 24. About 8,000 feet. A deep 

 ravine, which had, been recently burned over. 



Camp 23 : Timber-line ; divide between the Gunnison and Rio Grande, Au- 

 gust 25. About 10,000 feet. Timber mostly small; no pines. Found 

 many mollusks in the deep wet grass early in the morning. 



Camp 24 : Clear Creek, August 26. About 9,300 feet. A tributary of the 

 Rio Grande, emptying in Antelope Park. The banks were here cov- 

 ered with a riotous growth of brush and weeds. 



Camp 25 : Jennison's Ranch, August 27-28. About 9,600 feet. On the 

 Rio Grande, between Antelope and Baker's Parks. Fertile alluvial 



