190 REPORT UNITED STATES GEOLOGICAL SURVEY. 



Table of the Grotto Group — Continuen. 



Number or name. 



Size and depth. 



Temper- 

 ature. 



Eemarks. 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17. Bottomless Pit . 



Basin 16 feet diameter, 

 in which is a fissure 2 

 by 4 feet. 



15 by 20 feet. 



176 



175 



20. Perpetual 

 Spouter. 



21. Fan Geyser 



22. Eiverside Gey- 

 ser. 



Crater 4by 3 feet, fissure 

 at base. 



13byl4feet 



a7byllfeet 



&7by 9feet 



c9by 10 feet 



Basiia 30 feetdiameter in 



outside measurement. 



Water fills 11 by 18 



feet, 7 feet deep. 

 7J by SJfeet, 3 feet deep 



94 by 10 feet 



10 by 18 feet 



3 by 8J feet 



19by i;0feet 



Total length is about 181 

 feet, width varies. 



a 40 by 45 feet 



6 35 by 49 feet 



c 25 by 34 feet 



d is 10 feet wide. 

 e is 34 by 53 feet. 



17 feet diameter, 10 feet 



deep. 

 20 by 30 feet 



149 



ol40 



177 



154 



179 



160 



162 

 183 



al20 

 6150 

 cl53 

 dl65 

 el84 



184 



174° 



"Water is 2 feet t-^ g gS 

 below the top. 5'-, „ p^oi 



, 00 B Q 2.01 



Light -blue fun- ' ^ 

 nel spring, 



p 3 p £J: a 



• .° ^ 2 S, 



Yellowish basin with green 

 center, red line aiound the 

 outside. 



Eed bordered springs near 9, 

 They have greenish-yellow 

 basins; c bubbles slightly, 



Double funnel iu bluisli-gray 

 basia. 



Tellow-lined spring with deep- 

 red border. 



White bubbler with gray bor- 

 der, yellow and red edge. 



Spring with two central ba- 

 sins. 



Near No. 14. 



Blue-gray basin ; near it are 

 three small, circular pools. 



a is ared-lined spring " 

 with moss-like ba- 

 sin. 



6 reddish-yellow ba- 

 sin with fissure in 

 center. 



c yellow-green pool. 



d 'greeni»h-yellow. 



e deep-blue, cavern- 

 like spring. 



H 



» ffi tf 



> S-S"^ 



01 ^ Eli 



This spring is on the east 

 bank of the river below the 

 Fan Geyser. 



This is a steam vent on the 

 monnd with the crater of the 

 Fan Geyser. 



See the context for the fall de- 

 scription. 



1)0. 



All the springs enumerated in this table are not numbered on the 

 map, as I was obliged to work at a different time from Mr. Mushback, 

 who plotted them, and after returning from the field I could not identify 

 all with certainty, and I therefore placed only the numbers of those I 

 knew to be correct on the map. 



DESCRIPTION. 



No. 1. This spring is between the Giant and Grotto Groups, and might 

 be included with the former as well as latter if placed according to its 

 location. It is a large basin, surrounded by beaded silica, and has two 

 openings, which appear like two separate springs when the water is low, 

 as it was when examined. There is also a small hole near a. 



