PEALE.l 



UPPER GEYSER BASIN EMERALD GROUP. 



245 



Table of the Eme)-ald Group. 



ITumber and name. 



Size and depth of spring 



<sa 



Kemarks. 



1 



2. Great Spouter. . . 



3. Green Spring . . . 



4 



5 



6 



7., 



8. Great Hot Basin 



9 _ 



10. 



11. [Emerald Spring . 



12. 



15. Black Sand Gey- 

 ser. 



Cone, -witli orifice 18 by 

 12 inches at bottom of 

 basin, of C^ by 7 feet. 



20 by 25 feet 



50 feet diameter, 25 feet 

 deep. 



43 by 10 to 15 feet, 6 or 7 



feet deep. 

 4 by 2^ feet is average 



size. 



3 by 6 feet 



2by3feet 



140 by 200 feet; could 

 not get depth. 



198 

 195 



183 



a 192 

 b 155 



186 

 dl86 



187 



60 by 8 feet 



6 feet diameter, 3 feet 



deep in center. 

 36 feet long and 28 to 42 



feet wide, 35 feet deep. 



3Jby5feet 



3 by 1 foot to 18 inches . . 

 18 by 23 feet 



55 by 60 feet 



*188 



173 



170 

 148 



(t) 



197 

 189 



194 



No water in the baain ■when 

 visited. 



Great escape of steam. 



Known as Emerald Spring on 

 map of 1872 ; water is bluish- 

 green rather than emerald 

 color. 



Oblong with scalloped edges. 



a milky. 



6 clear. 



c milky. 



d clear. 



In hard geyserite. 



Has yellow, white, and gray- 

 ish basin aad 6 or 7 centers 

 or spring holes; bulges in 

 one of the central ones, 

 throwing water into waves. 

 The overflow goes in two 

 directions over brilliantly 

 colored terraces. 



Crater-like greenish-tinted ba- 

 sin. 



Yellow and red margin, with 

 red outlet and white basin. 



Known on map of 1872 as the 

 Great Emerald Spring. It 

 is beautiful emerald tint 

 with yeUow-green basin and 

 ornamented edge. Outlets 

 are brilliantly colored with 

 deposit of iron. 



Water is 4 feet below the sur- 

 face. It is a crater-Uke hole, 

 with red and yellow lining. 



TeUow-lined hole in the gey- 

 serite on the river bank. 



On the river's edge, above 

 which it rises 2 to 3 feet, 

 with a corrugated basin and 

 bulging center. 



''At north end. 



tCan't be taken. 



DESCRIPTION. 



Kg. 1. — This conical mound of hard gray geyserite is about 8 feet 

 high, and on the summit has a yellow-lined funnel-shaped basin, 6J by 

 7 feet, in which the orifice is about 12 by 18 inches. The basin was 

 empty when we saw it this year, but the water could be heard boiling 

 far below in the tube, and there is no doubt that it has periods of spout- 

 ing, although the column may not be projected to a great height. A 

 temp'erature taiken here in 1871 was 152° F. 



No. 2. Great Spouter. — In this basin the water was in violent ebulli- 

 tion, spurting and spouting constantly with a great escape of steam. 

 The water-way leading from it to No, 4 is brilliantly colored with yel- 

 lows, orange, and reds, the latter predominating as the river is ap- 

 proached 5 greenish prevailing near the Bjjriug. 



