76 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



same as last. The sample consists of uncompacted fine calcareous sand, with 

 iev>- large fragments in it. The facetted fragments, a few pieces of lamelli- 

 branch shells, and a branch of a calcareous alga (?) were noted. Some few 

 ovules. Part of a spine of an echinus. The test of a foraminifer of the o-enus 

 Oristellaria (?). Almost nothing is determinable. 



650 feet. — Color gray, like 600. A very friable sand-rock, like the last. 

 Limpid quartz is very small in amount, and seems to be of finer grain than the 

 average. Spines of echini, lamellibranch shells, an alga (?), and pieces of 

 oolite were noted. Almost nothing is determinable. 



675 feet. — Gray, like 600, possibly a little darker. A very friable sand-rock. 

 Quartz like the last, but with more of the larger rounded grains. Small pieces 

 of oolite, lamellibranch shells, spines of echini, and tests of foraminifera 

 noticed. One of the last looked like an Orbitolites and another like a Clavu- 

 lina. As in the preceding five, there is a great dearth of referable fossil 

 remains. 



700 feet. — Color yellowish gray-white, very different from 675 and above. 

 Marked change in the rock. Sample is a very fine uncompacted sand, almost 

 all of which passed through the Xo. 40 mesh sieve. Amount of quartz 

 sand has dropped off considerably. The quartz grains are more varied in size 

 than has been usual. Fragments of lamellibranch shells and spines of echini, 

 small pieces of oolite, and many detached ovules are present. Almost nothing 

 is determinable. The whole sample looks like a fine beach sand. 



725 feet. — Yellowish white (ecru) limestone, mostly a "shell rock." 

 Amount of quartz reduced to a trace. Many relatively large fragments of 

 lamellibranch shells are present, some of which are recognizable as Pectens or 

 closely related shells. A very few minute gastropods. Spines of echini and 

 pieces of their tests, many ovules and some pieces of oolite observed, bryozoa, 

 and foraminifera (Amphistegina ? Orbitolites? etc.) are numerous. A consid- 

 erable proportion of the sample is of determinable fragments. A globular 

 foraminifer appears and is relatively abundant. 



750 feet. — Color yellowish white (ecru). Very small amount of quartz 

 sand. Fragments and internal casts of lamellibranch?, — pectinoids, etc. 

 Parts cf internal casts of minute gastropods. Fragments of tests of echini. 

 Orbitolites (?) and other foraminifera. Ovules but no oolite observed. Some 

 bryozoa. A few fragments of corallines (?). 



77") feet. — Color very light yellowish brown. A hard, rather porous, 

 highly fossiliferous limestone. Trace of the quartz sand very fine. Many 

 shells and casts of pectinoids and other (small) lamellibranch s. Small gas- 

 tropods. Spines and plates of echini. Ovules present in small numbers. 

 There are considerable fragments (§•" X f" X : j") present, but no coral was 

 observed. Foraminifera are very scarce, if present at all none were observed. 



800 feet. — Very light yellowish brown, like the last. Amount of quartz 

 sand small, but greater than in any of the last four samples. The rock Bei in- 

 to have been a rather hard, very porous limestone. Ovules rather numerous. 

 Foraminifera (Orbitolites ? Oristellaria? Amphistegina? etc.) in numbers. A 



