FEALE.J SHOSHONE GEYSER BASIN LITTLE GIANT GEYSER. 



269 



probably numerous springs here. They are scattered over a flat, bare 

 spot, with geyserite pebbles and sand which is bluish in color. 



The Little Giant Geyser. — This geyser is in the center of a platform- 

 like area of geyserite, measuring 68 by 79 feet. For a distance of 

 about 10 feet around the geyser, or in a si^ace of about 20 feet diameter, 

 this platform is beaded with pink geyserite, which probably denotes the 

 area on which the water falls while the geyser is in action. The crater 

 is somewhat irregular in shape, although nearly square, measuring 3 by 

 4^ feet. The basin is 3^ feet deep and lined with brownish and red 

 geyserite, which also forms a slightly raised rim around the geyser. The 

 eruption takes place when the basin is full of water, and soon attains its 

 maximum elevation of 10 to 50 feet, generally in about 2 minutes, and 

 then dies down ciuickly, the entire eruption lasting from 13 to 28 minutes. 

 After it dies down there are occasional spurts of a foot or so. There 

 appear to be about two eruptions daily, but the geyser was not closely 

 enough observed to determine the interval between the eruptions. The 

 following were noted: 



Date. 



Eruption 

 began. 



Maximum 

 attained. 



Eruption 

 ended. 



a 



s 

 Q 







h. m. g. 



4 17 p. m. 



2 30 p. m. 



1 42 p. in. 



8 25 a. ni. 



6 05 p. m. 



11 00 a. m. 



11 20 :jo a. m. 



3 27 15 p. m. 



10 00 a. m. 



h. m. s. 



h.m. 



4 30 p. m. 



VI. 



13 



Feet. 

 10 15 



15 







16 



1 44 00 p. m. 



2 10 p. m. 



28 



50 



17 





17 











18 









19 



11 22 30 a. m. 11 45 a. m. 

 3 29 p. m. 3 40 p. m. 



24i 

 lil 





19 



25 



20 













The following is the transcription of the notes taken during the prin- 

 cipal eruptions observed : 



August 16. 



During the morning the geyser has been quiet. 



42 p. 

 44 p. 

 00 p. 

 10 p. 



The greatest elevation attained was 50 feet. 



m., eruption began. 



m., eruption has attained maximum and begins to die down. 



m., still throws some water. 



m., eruption is ended. 



h. VI. 



1 25 p. m. 

 1 30 p. m. 



August 19. 



water is within a few inches of the top, and has a temperature 

 of 192° F. at the surface and 193^ F. 3 feet below the surface, 

 the water is within 2 inches of the top and is bubbling. The 

 temperature 3J feet below the surface is 200° F. 



27 15 p. m., eruption begins. 



29 p. m., maximum 25 feet attained. 



30 p. m., spouts only a foot above the crater, and has a temperature 

 of 194.;o F. 



3 



2 

 3 



3 

 3 



3 45 p. m., the water is 3 feet below the top. 



35 p. m., spouts 2 feet or more. 



40 p. m., the geyser is perfectly quiet. 



