HOVEY: ARTESIAN WELL AT KEY WEST. 79 



The sample is a coarse calcareous sand (gravel it might he called) with many 

 recognizable fragments in it, and not much of it passed through the sieve. 

 Some pieces of compact limestone. No ovules were observed. Fo: aminifera 

 not as numerous as in last. Bits of madrepores very numerous. Spines and 

 plates of echini are scarce. Bryozoa are common, and lamellibranch remains 

 are very abundant. A few of the fragments indicate that some of the lamelli- 

 branchs were quite large. A few gastropods were noted. 



1,150 feet. — Color light brownish gray. Very slight trace of the quartz 

 sand. The sample is a coarse calcareous gravel (comminuted rock) like the 

 last. Foraminifera of several genera are numerous. Bits of madrepores are 

 common. Some spines and plates of echini were observed. Lamellibranch 

 remains very numerous. Gastropod shells not uncommon, and some genera 

 noted not seen before. Ovules appear to be absent. 



1,175 feet. — Color light brownish gray, like that of preceding. Very slight 

 trace of the quartz sand. The sample consists largely of comminuted rock, but 

 there are many rounded sand grains in it and a very few ovules; the latter 

 were determined by their concentric structure. Foraminifera are numerous, 

 but bits of coral (madrepores) are less abundant. A few spines and plates of 

 echini were noted. Bryozoa numerous. Lamellibranchs are very abundant. 

 Gastropods more common than usual. 



1,200 feet. — Color light brownish gray. The limpid quartz sand is present 

 as usual in very small amount. Sample seems to be a very finely comminuted 

 rock, as it is made up for the most part of angular fragments. It is much finer 

 grained than the last two, and there are fewer determinable fragments. No 

 ovules. Foraminifera are common, and minute bits of coral (?) abound. Re- 

 mains of echini are very scarce. Bryozoa rather common. Lamellibranch 

 remains are very numerous, but there are very few gastropods. 



1,225 feet. — Very light brownish gray. The quartz sand is present as a 

 mere trace. The same is a very fine calcareous sand, most of the grains of 

 which are rounded. No ovules. More than nine tenths passed through the 

 sieve, and the rest is not very coarse. There are a few angular bits of lime- 

 stone in the residue. Not much is determinable, but I noted a few foraminif- 

 era, many fragments of coral, some lamellibranchs, and a few gastropods (?). 



1,250 feet. — Color very light brownish gray with many white particles. The 

 amount of quartz sand is greater than it has been for 350 feet. The sample 

 consists of a very fine grained calcareous sand, with comparatively few coarse 

 particles in it, but in the latter are some angular bits of rock. Among the 

 coarser particles are many foraminifera and bits of coral. Echini not noted. 

 Bryozoa doubtfully recognized. Lamellibranchs, as well as gastropods, seem 

 to be scarce. Some ovules and a few small bits of oolite were observed. 



1,275 feet. — Color light brownish gray. Quartz sand present in small 

 amount. The percentage of coarser material is greater than in the last two, 

 and one can see in it bits of porous as well as compact limestone. Sample, 

 aside from organic remains, consists largely of rounded grains. Ovules were 

 observed, but they are very scarce (and may have come from 1,250 feet ?). 

 vol. xxviii. — no. 3. 2 



