PEALE.] 



UPPER GEYSER BASIN GRAND GROUP. 



Table of the Ch-and Group — Contiuued. 



211 



Name and number. 



Size and depth. 



Eemarks. 



33^ 



34 



35 



3(i 



37 



38 



39. Limekiln Springs 



40 



41 



42 



43 



44 



45 



46 



47 



48 



49. Wave Spring 



50 



51 



51a 



52. Beauty Spring . . 



53 



54 



55 



56 



a, 10 by 2 feet ; typical 



of all the pools.' 

 23 by 39 feet ; 15 feet deep . 



12 feet bv 6 and 7 feet... 



11 by 18 feet 



1 by 7 J feet ; 6 feet deep . 

 Basin 23 by 32 feet; 



fissure 2 by 5 feet. 

 Cone is 8 to 10 feet above 



river level; « is basin, 



5 feet wide by 7i feet; 



6 is cone, 2 by 3 feet. 



Obvllfeet 



CO by 15i to 24^ feet; 



15 feet deep. 



6iby GJfeet 



4iby6ifeet 



7 feet by 18 inches 



2by 3feet 



o p. 

 125 



184 



*192 



189 



o p_ 



ICO 

 185 



al£9 

 tl94 



5\ by eifeet . 



4ibyejfeet 



Basin 5 feet in diameter. 



Outer basin is 18 by 28 

 feet; inner basin is 5 

 feet diameter ; fissure 

 at bottom is 18 by 6 

 inches. 



Outer basin is 22 by 26^ 

 feet; inner basin is 

 C feet diameter. 



22 by 24 feet 



6 by 5 feer 



14Aby 17 feet 



182 

 18 9 

 178 

 159 

 a 176 

 193 



§184 



148 

 167 

 182 



169 

 167 



2 p. m . 



18 by 9 feet ; a is,in cen- a 1 92 

 ter, 5 by 2 feet; &, in h 192 

 center, is 2 by 2 feet. 



49 by 51 feet 



10 feet diameter 



22 by 31 feet 



Collection of clear and muddy, 

 cool pools in the grass. 



Largo bluish pool near the riv- 

 er's edge; boils at one end. 



Boiling pool. 



Steam vent. 



Quiet pool. 



Ciater, evidently an old gey- 

 ser; boiling spring in fissure. 



Both springs sputter and boil 

 constantly. 



Lavender-colored mud pool. 

 Pool-like spring, with scal- 

 loped edge. 



Greenish-tinted water. 



Group of fissures and holes. 



Beaded geyserite hole; boils 

 vigorously ; near it is a lis- 

 sure spring. 



Geyser water rises and falls in 

 yellow beaded basin spouts 

 at intervals. 



White pool, shaped like bath- 

 tub. It is a quiet spring. 



The water bubbles from a fis- 

 sure in the basin. 



Gray basin, in which the water 

 is thrown into waves by the 

 escaping steam. 



Blue center in a gray basin, 

 with scalloped rim ; no out- 

 let. 



Gray basin. 



Back of No. 51. 



A very handsome spring, with 

 greenish, white center and 

 yellow edge, changing to red 

 and saifion on outside. 



Two boiling springs in one 

 basin. 



Blue pool, with cavern. 

 Blue spring, with gray edge. 

 Large, bluish, green basin, 

 with broad outlet. 



* 14 feet below the surface. 

 J !Not taken. 



t 4 feet below the surface. 

 § When quiet. 



DESCRIPTION. 



Grcmd Geyser (Plate XX). — Unless the eruptions of tliis magnificent 

 fountain had been witnessed, one would scarcely take it for one of the 

 most important geysers in the Basin; for. unlike Old Faithful, the 

 Grotto, or the Giant, it has no raised cone or crater, nor even a huge 

 cavern-like bowl, as in the case of the Giantess or Oblong. It is situ- 

 ated near tbe base of a hill, and is easily recognized by the crater of 

 the Turban, which adjoins it on the north. The basin is 52 feet in di- 

 ameter, and but slightly depressed below the surface, the greatest depth 

 in the central portions being only about a foot. The bottom of the basin 

 is very irregulai, and near the mouth of the geyser tube is lined with 



