416 EEPOET UNITED STATES GEOLOGICAL SUEVEY. 



Table of analyses of deposiis of mud springs. 



Locality. 



Spring. 



Analyst and 

 date. 



6 



m 



% 

 H 



i 



O 



s 



d 





White specimen; spring 

 unknown. 



Lavender specimen; 

 spring unknown. 



Pink specimen ; spring un- 

 known. 



Pink specimen ; mud puffs, 

 Lower Geyser Basin. 



Blue specimen, near Castle 

 Geyser, Upper Geyser 

 Basin. 



A. Steitz 



-...do 



....do 



F. M. Endlich, 



1873. 

 ....do 



42.2 



22.2 



32.6 



44.61 



50.70 



64.00 









17.8 



tional Park. 

 Bo 



5.2 

 2.5 

 8.65 

 15.15 



58.6 

 52.4 

 45.09 

 20.27 



.6 



L86 

 3.25 



5.00 



4.2 



Do 



8.3 



Do 



Trace. 



Do 



Trace. 





6.00 



Prance. 













Locality. 



Spring. 



Analyst and 

 date. 



d 



d 



d 



O 



6 



m 



o 

 H 





"White specimen; spring 



unknown. 

 Lavender specimen; 



spring unknown. 

 Pink specimen ; spring 



unknown. 

 Pink specimen; mud puffs, 



Lower Geyser Basin. 

 Blue specimen,near Castle 



Geyser, Upper Geyser 



Basin. 



A. Steitz 



....do 



33.4 



6.6 fi-fi 







100. 00 



tional Park. 

 Do 







3 ?, 







Do 



...do 





4.2 

 Trace 



4.2 







100. CO 



Do 



F. M. Endlich, 



1873. 

 ....do 



2.66 

 11.55 







102. 87 



Do 







Traces. 



100. 92 







*15. 00 







too. 00 



France. 

















* Organic. 



t This is given as contained in 100 parts. The remainder (10) is prohahly water, although it is not 

 mentioned. The analysis is taken from Walton, p. 350. 



Section IY.— GEYSERS. 



CHAPTER X. 



Definition of Geysers and Theories. 

 DEFINITION. 



We have in Part II, page 306, given the derivation of the word Geyser 

 from the Icelandic word geysa — to gush. We now come to the defiui- 

 tion of a geyser. It may be defined to be a periodically eruptive or 

 intermittent hot spring from which the water is projected into the air in 

 a fountain-like column. The analogy between geysers and volcanoes 

 has frequently been noticed and the former have often been described 

 as volcanoes which erupt heated water instead of melted lava. We have 

 italicized the word hot in the definition just given, because springs con- 

 taining a large amount of gas may simulate geysers.* 



* The Kane Geyser Well in Pennsylvania is an instance. It spouts regularly, tlie 

 eruptions being due to gas. An artesian well at Rank Herlany, in Hungary, which 

 is 1,457 feet deep, the highest temperature of which is 75° F., spouts to the height of 

 100 feet at regular intervals. It contains more carbonic acid gas than water in its 

 volume. 



