FEALK.l LOWEB GEYSER BASIN FOUNTAIN GROUP. 



Table of Third or Fountain Group — Continued. 



149 



Number and name. 



Size of spring. 



a . 



O 



2 t- 

 a 



o 



a = 



H 



Bemarka. 



21 





o J|_ 

 a 179 

 6 174 

 c 174 

 a 172 

 6 173 

 c 150 

 146 

 150 



*195 



tl69 

 fj. Iftfi 





o jr. 



Basin with three orifices • a 



22 ^ 



Openings, 5 or 6 by 3 



i'eet. 



10 by 6 feet 





^ 



and & are greenish- tinted ; 21 

 is between 22 and 19. 

 Three opeings in yellow de- 

 posit. 



Quiet pool, with green lining. 

 Quiet green holes. 

 Spouts irregulariy a foot or 

 two. 



Probably a geyser ; has a large 

 pool of greenish- tinted water, 

 a is a sponter. 

 & is a spouter. 

 c bubbles occasionally, 

 d is a quiet spring, 

 e is a constant boiler. 



23 





^ 



24. 









25 



4byl0feet 







26 



100 feet diameter (1) 



10.30 a. m. 



39 







b 197 



All on a long Assure ; c 198 



/is5byl2 feet; gis\\dl90 



10 feet diameter. e 198 



f iflfi 







( 







27 \ 







I 













/ is a violeoQt boiler, 

 ois a quiet spring, 

 lietween 27 and 28. 





2 bT 4 feet 



^162 



196 



tl57 







27i 



11a. m 



42 



28 



lOO'feet long ; 30, 50, and 

 75 feet wide. 





28a 







Spouts a foot or two. 

 Cavem-like spring at foot of 



Fountain plateau. 

 Green spring. 

 Stream, jets, and springs not 



examined. 



29 



12 by 30 feet ; spreads 

 out into a pool. 



160 



1.40 p. m.. 



45 



30 



31 





















' When qtiiet. t At edge. 



DESCRIPTION. 



No. 1. Mud Fuffs (Plate VIII). — This remarkable mud caldron lias a 

 basin which measures about 40 by 60 feet, with a mud rim on three sides 

 which is from 4 to 5 feet in height. In this basin is a mass of fine, white 

 mud w^hich is in a state of constant agitation. It is like some huge 

 boiling paint-pot or bed of mortar. There are numerous points of ebul- 

 lition, and the constant boiling has reduced the contents to an inti- 

 mately mixed mass of siliceous clay. There is a continuous plop-plop 

 of mud, which rises in hemispherical masses, cones, rings, and jets. On 

 the fourth side or south end of the basin the rim is low and forms the 

 edge of a mud flat of pink and red mud, which is cracked, and over 

 which there arc some 30 or 40 mud cones, generally of pink and rose col- 

 ors, although a few are gray. They are from a foot to 2 feet high as a 

 rule, although some are 3 feet. These cones or mud puffs are what have 

 given rise to the name for the caldron. Some are geyseric in action, 

 and send sports 4 or 5 feet into the air. The mud in them is much 

 thicker than it is in the main basin. There are also several pools of 

 turbid water in this mud flat, and outside of the basin are a couple of 

 mudholes. The red mud cones are seen in the foreground of the illu^s- 

 tration (Plato VIII), and back of them the White Mud Basin is shown. 



No. 2. Back of the Mud Puffs at a somewhat lower level is an almost 

 circular spring about 25 feet in dia.meter, with a white rim inclosing 

 rather turbid, milky-blue water with a temperature of 102^ F. When 

 examined it was perfectly quiet, but the surrounding deposit indicates 

 that it is subject to periodical overflows. Near it is a small throbbing 

 mud 'sent which is about 3 inches in diameter. The channel loading 



