_ REVIEWS AND BOOK NOTICES. 353 
series of semicircular basins, with margins varying in beighi from 
a few inches to 6 or 8 feet, and so beautifully scalloped and adorned 
with a kind of bead-work that the beholder stands amazed at this 
marvel of nature’s handiwork. Add to this, a snow-white ground, 
with every variety of. shade, of scarlet, green, and yellow, as 
brilliant as the brightest of our aniline dyes. The pools or basins 
are of all sizes, from a few inches to 6 or 8 feet in diameter, and 
from 2 inches to 2 feet deep. As the water flows from the spring 
over the mountain side 
in to an- 
Fig. 71. 
— from one basin to a 
coing to decay. Here 
by 40 feet in diameter, the water so per- 
fectly transparent that one can look down 
the beautiful ultramarine depth to 
the bottom of the basin. The sides of 
the basin are ornamented with coral-like 
= forms, with a great variety of shades, 
ce from pure white to a bright cream-yellow, 
Liberty Cap. and the blue sky reflected in the trans- 
Whole which surpasses all art. The calcareous deposit around 
the rim is also most elegantly ornamented, but, like the icy cover- 
Ing of a pool, extends from the edge toward the omna ee this 
ani 
projects over the basin until it is not more than a h nch 
‘ ick. These springs have one or more centres of ebullition, and 
in this group it is constant, seldom rising more than to four 
in 
inches above the surface. From various portions of the rim the 
water flows out in moderate quantities over the sides of the hill. 
Whenever it gathers into a channel and flows quite swiftly, ins 
AMER. NATURALIST, VOL. VII. 23, 
