76 EEPORT UNITED STATES GEOLOGICAL SURVEY. 



form this subterrace is a wide flat, which probably once was a spring 

 terrace, in which the traces of the basins have been completely obliter- 

 ated. This flat gives the best view of the main terraces. The mass 

 which they form is nearly 300 feet above it, and its white and gray 

 colors contrast with the green of the fringing pines like a huge frozen 

 cascade suddenly arrested in its descent. No living trees are found 

 where there are any new deposits, although many dead trunks are scat- 

 tered over them. On the old gray deposits, however, pines have grown 

 since the disappearance of the springs. Almost east of the Liberty Cap 

 is the spring nexL. to be described, viz, the " Little Joker." 



ISTo. 3. Little Joker. — This is a small hole 2 feet by 3 feet, and only 

 6 inches deep. Its surface is covered with a crust of lime carbonate. 

 In the outlet is a sulphur deposit in fine, silky, thread-like filaments. 

 The temperature of the water is 143° F. It stopped flowing in 1874, 

 and began again in 1876. It was once used for bathing, and has been 

 used for drinking purposes when cooled. It is said to have been bene- 

 ficial iu rheumatism. It has a cathartic action, as most of the other 

 springs at this x>lace have in a less degree. 



No. 4. — Twenty feet below No. 3 are several holes out of which the 

 water oozes from beneath the deposit, and spreads out into a large 

 shallow pool that is surrounded with red gelatinous material. It is 

 impossible to define the basin, but the average temperature where the 

 water gushes is 157° F. 



Nos. 6 to 9. Bath Springs. — These springs are so called because the 

 water from them is led by wooden troughs into the bath-houses. Most 

 of the water is supplied by No. 9, which is a small fissure-like hole. 

 Although the springs are small, the flow of water is vigorous. The 

 channels and wooden troughs are covered with a bright- green confervoid 

 growth, mingled with which is a brown growth. These springs are 10 

 to 20 feet in elevation above the Little Joker. The temperatures are 

 90°, 100°, 107°, 115° F. In 1871 the temperature was given as 92°. 



No. 10, as we have already noted, is situated on the main terrace below 

 the Cleopatra Spring. It is 3 feet by 5 feet, and 1 foot deep. It has a 

 hard, irregular, cell-like basin. In the outlet are sulphur filaments. The 

 water after flowing down an incline fills large basins. The deposit is 

 white, brownish-red, and yellow. The temperature of the water is 158° 

 F., and sulphureted hydrogen and carbonic acid gas escape in bubbles 

 from its surface. Back of the spring is a large pool covered with a crust of 

 lime carbonate. This deposit is also noticed on the surface of the water 

 in some of the basins below the spring. The temperature here in 1871 

 was 155° F. In 1872 the temperature was noted as 152° F. The spring 

 Is in a sort of a ravine, and southwest of it is an irregular terrace, over 

 • which the road to the Gibbon Geyser Basin ascends the mass of deposit. 



Nos. 11 to 15 form a small group on a flat-topped mound which is 

 really a spur or projection from the main terrace (ninth terrace of the 

 description in the report for 1872). The level of this mound is 90 feet 

 above the Cleopatra Spring, and about 190 feet above the Bath Springs. 

 The sides of the mound are arranged in beautiful reddish and reddish-gray 

 basins, from 2 feet to 18 feet in size, very irregular, and from 6 inches to a 

 foot or more in depth. Plates III and IV show some of the basins near the 

 base of the mound. The springs are small and comparatively unimportant. 

 They are sufQciently described in the table. The highest temperature was 

 157° F. In 1871 the highest taken here was 158° F., and in 1872, 157° F., so 

 that the temi^erature is probably unchanged. Between the projection on 

 which these springs are situated and the one on which the main springs 

 (21) are located there is a depression in which are basins arranged like 



