PEALE. I 



LOWEE GEYSER BASIN — EGERIA SPRINGS. 



17! 



the basin is better known, and if we include the Fairy Falls Group and 

 the Sentinal Creek Springs, we must include the Egeria Springs. The 

 position of the springs Is not indicated on the map of the Lower Basin, 

 but the detailed map gives a good idea of this exceedingly interesting 

 and important group of springs. They are principally on the left bank 

 of the river, although the only Icnown geyser at the time of our visit in 

 the group is on the right bank, close to the trail. The si)ring8 occupy 

 an area extending along the river about a mile in length and a quarter 

 of a mile in width. The river, as it comes from the canon valley above, 

 makes a sharp turn or bend about opposite the center of the group. 

 The main springs are at the lower or north end, on a mound which is 

 about 50 feet above the river level. The following table catalogues the 

 springs : 



Table of Half-way Group or Egeria Spvings. 



K'ame or number. 



Size of spring 



a? 



Eemarks. 



1. Grand Pris- 

 matic Spring. 



2. Turquoise 

 Spring. 



3. Cliff Caldron 

 or Excelsior 

 Geysor. 



250 by 350 feet. 

 100 by 100 feet. 

 200 by 330 feel. 



80 by 150 feet... 

 20 feet diameter. 



6. Indigo Spring! 20 by 25 feet. 



a 5 by 8 feet 



6 small oblong pool. 

 c 3^ foot diameter. . . 



9by 12 feet 



2 feet diameter 



a 6 inches diameter. 

 6 6 inches diameter. 

 22 feet diameter 



12 2by 4 feet. 



13 ' 2by 3 feet. 



14. 

 15. 

 16. 

 17. 

 18. 

 19. 

 20. 

 21. 



10 by 15 feet. 

 10 by 20 feet. 

 10 by 15 feet. 

 25 by 30 feet. 



20 feet long, 8 to 10 feet. 



15 by 18 feet 



10 by 20 feet 



o -p. 

 *146 



171 

 175 



Cold 

 135 



196 



169 

 125 

 151 

 173 

 190 



194 

 195 



174 



190 

 197 



105 

 150 

 65 

 172 

 117 

 170 

 130 

 182 



12.10 p. m. 



1 p. m. 



57 



This is probably the largest 

 spring ia the JFire Hole Re- 

 gion. 



Square lake-like blue-tinted 

 spring. Receives some of 

 the overflow from No. 1. 



A great boiling caldion. It 

 was impossible to take the 

 tempeiature anywhere ex- 

 cept near the outlet. 



Turbid blue pool with gray 

 basin. Receives water from 

 No.]. 



Light-blue spring with white 

 basin. Receives some of the 

 overllow from No. 1. 



Dark blue boiling spring, tri- 

 angular in shape. 



These springs bubble gently. 



White basin,bubblingrapidly. 



Clear bubbler with two open- 

 ings. There are others close 

 by it. 



Two small holes. 



Cavern in center about 9 feet 

 in diameter, in which the 

 ■water is of a bluish-green 

 tint ; boUs gently. 



White-lined basin which boils 

 gently. 



Spouting hole with a fissure 

 at the bottom 2 to 3 inches 

 wide. 



Greenish hole at the end of a 

 red shallow pool. 



Basin red at one end and white 

 at the other. 



Red hole. Receives water 

 from No. 14. 



Gray basin with cavern-like 

 hole 15 by 20 feet. 



Greenish pool with a red 

 basin. 



Gray spring with black cen- 

 ter. 



Oval red pool with gelatinous 

 border. 



Cave-like spring in conglom- 

 erate sandstone and geyser- 

 ite. 



*0n north edge. 



