HOVEY: ARTESIAN WELL AT KEY WEST. 81 
in all the samples where it is present at all. Originally was а loosely com- 
pacted fine-grained sand-rock with some solid limestone init. Not much is 
recognizable. In the small determinable component were seen foraminifera 
(Teatularia, Orbitoides, Cristellaria, Orbitolites, ete.), a few spines of echini, some 
remains of lamellibranchs (one is part of a comparatively large shell). It is 
doubtful whether any gastropods are present. 
1,450 feet. — Color very light yellowish brown, with deep brown spots col- 
ored by limonite. The quartz sand is present as a mere trace, The rock seems 
to have been a very loosely compacted sand-rock, with a very few lumps and 
no solid limestone in it. The grains are rounded, and there are some ovules 
and bits of oölite in the material. Almost all the sample went through the 
sieve, and is too fine to be determinable. In the small residue were noted some 
foraminifera, an occasional bit of coral, and a few remains of lamellibranehs. 
1,475 feet, — ThẸ color has changed decidedly to a pure light gray. А few 
angular particles of limpid quartz were noted. Scarcely опе per cent failed to 
pass the sieve, and very little of this residue is determinable. Ав usual, most 
of the recognizable forms are foraminifera (sharply and obtusely pointed conical 
Textulavia, Cristellaria, Biloculina, ete.). There are also bits of madrepore 
corals, millepores (2), branching bryozoans, and of lamellibraneh shells and 
casts. The sample seems to be a very fine sand, without lumps or chips of 
solid rock. 
1,500 feet. — Color light brownish gray. Quartz sand, —a mere trace. 
Sample is a very fine calcareous sand with a very few angular bits of rock 
init. The sand consists of rounded and subangular particles. Хо ovules or 
oólite noted. Of the recognizable forms most were foraminifera, some of 
which were large (Orbitoides, Textularia, ete). Some bits of coral and a very 
few spines of echini. Fragments of branching bryozoans were noted, and 
a few remains of lamellibranehs. Nothing could be determined even gener- 
ically except the foraminifera. 
1,525 feet. — Color light brownish gray, like the preceding. Quartz sand 
likewise a trace, — visible under the microscope and left as residue by HCl. 
Mostly a very fine sand, but in the coarser part are some relatively. large pieces 
of a porous sand-rock, consisting of rounded grains with an occasional fossil. 
Organisms recognized : many foraminifera of several genera, the conical Teatu- 
laria being the most common ; a few bits of coral and branching bryozoans ; 
lamellibranchs scarce and gastropods very scarce, but probably present. 
1,550 feet. — Color light brownish gray. Quartz sand,—a mere trace, as 
usual. Appears to have been a porous limestone and sand-rock, none of which 
was solidly compacted. Foraminifera are very numerous, Textwlaria pre- 
dominating. A few bits are doubtfully referred to madrepore coral, Remains 
of echini, branching bryozoa, lamellibranchs, and gastropods were noted, the 
last being very scarce. 
1,575 feet, — Color light brownish gray, like the last. The angular limpid 
quartz sand is present as a mere trace. Seems to have been a moderately 
coarse sand-rock with much fine material in it, the grains are rounded, and 
