HOVEY: ARTESIAN WELL AT KEY WEST. 69 
825 feet. Тһе remainder is more sandy, with well rounded grains, but 
contains some angular fragments of amorphous rock (e. g., 975 feet). 
All is more or less odlitic. ` The quartz sand is present only as a trace, 
and sometimes (975 and 1,000 feet) is scarcely perceptible. Most of the 
samples from these depths are notably fossiliferous, foraminifera and 
lamellibranchs predominating. From 900 feet down bits of madrepore 
corals were noted in the samples, aud such fragments were rather nu- 
merous at 1,000 fect. 
1,100 to 1,175 feet. — Light gray limestone, partly dense and partly 
porous in texture, containing only a slight trace of the quartz sand. 
Somewhat oólitic at 1,175 feet. Foraminifera abound, though they are 
somewhat less numerous in the lower than in the upper half of this set. 
Bits of coral, also, are more numerous in the upper half than in the 
lower. The fragments in the sample from 1,125 feet indicate the pres- 
ence of comparatively large lamellibranchs. Remains (casts) of gastro- 
pods are more numerous at 1,150 feet and 1,175 feet than in most of 
the samples. 
1,200 to 1,350 feet. — A gray sand-rock with the 1,200 foot sample a 
transition to that above, but in all the set there are many angular bits 
of dense and porous limestone among the rounded grains indicating the 
sand-rock, Тһе quartz sand is present in all, but in the sample from 
1,250 feet there is more than in any other for 350 feet above it and all 
the rest of the distance to the bottom of the boring. Fossils are 
rather scarce in this set, even foraminifera being numerous only in the 
three samples 1,275, 1,300, and 1,325 feet. Coral fragments come next 
to the foraminifera in abundance, but are very few in 1,300 to 1,350 
fect. From 1,250 to 1,350 feet the rock is somewhat oólitic. 
1,375 to 1,450 feet. — A yellowish gray sand-rock containing some 
porous limestone (much at 1,400 fect) and a little dense rock, but be- 
coming a fine, closely compacted sand at 1,450 feet. Textularias of at 
least two species appear at 1,375 feet, and are persistent in most of the 
samples from this point to the bottom of the boring and outnumber the 
Orbitoides at most depths. Aside from the foraminifera very little is de- 
terminable, most of each sample except that from 1,400 feet being so 
finely comminuted as to pass through the No. 40 mesh sieve. Of quartz 
sand there seems to be none at 1,375 feet, and only a trace at the other 
depths. Ovules and bits of oólite are not numerous. There is some 
50 feet. 
1,475 to 1,975 feet. — Sand-rock varying somewhat from one depth to 
iron stain at 1,4 
another in color, compactness, and amount of contained dense and porous 
