80 bulletin: museum of comparative zoology. 



There are many foraminifera, and bits of coral are numerous. A few spines 

 of echini were noted, and also a few bryozoa. Lamellibranchs are not numer- 

 ous, and gastropods are very rare. 



1,300 feet. — Color light brownish gray. Trace of quartz sand present. 

 In the coarse portion of the sample there are many bits of porous rock, some of 

 compact, and a few of oolitic. Much of the finer stuff is rounded. Some ovules. 

 Foraminifera abound, and the curiously distorted Orbitoides have reappeared. 

 Bits of coral are not uncommon, but there are very few remains of echini and 

 bryozoa present. Lam el li branch remains are common, and gastropods are 

 scarce. Noted some annelid (?) tubes. As usual, however, most of the material 

 is unrecognizable. 



1,325 feet. — Color light brownish gray. Almost no quartz sand, but an 

 occasional particle may be noted in the fine stuff. Four fifths of the sample 

 went through the No. 40 sieve. Originally a porous sand-rock 1 Ovules are 

 rather numerous. Many foraminifera were noted, some of different genera than 

 any heretofore observed. Bits of coral not uncommon. Echini seem to be 

 absent. There are a few bryozoa. Lamellibranchs are common, but gastropods 

 rare, as usual. 



1,350 feet. — Color light brownish gray. Quartz sand very small in amount, 

 but of same character as before. Comparatively little of the sample went 

 through the sieve. The residue shows that the rock was very porous, and con- 

 tained many rounded grains of sand and some ovules. The rock also contained 

 some nodules of compact limestone. It appears to be different from the 1,325 

 foot sample. Determinable organic remains were not very abundant, but I 

 noted foraminifera (Orbitolites, etc.), coral (?), two or three spines of echini, 

 and a few bits of bryozoa. Gastropods (Dentalium, etc.) were scarce, and 

 lamellibranchs not numerous. 



1,375 feet. — Color light brownish gray, with yellow cast. The quartz sand 

 seems to be wanting. At least nine tenths of the sample went through the 

 sieve as a rounded sand. In the residue are some bits of friable porous rock, 

 and a few of compact stone, as if of nodules. Ovules (?) are present. Foram- 

 inifera are numerous, and some Orbitoides are large, one measuring 3.5 mm. 

 across. Textularia appears. Several fragments of madrepores were noted. 

 Spines of echini and the facetted bits are few in number, and so too are 

 bryozoan, lamellibranch, and gastropod remains. 



1,400 feet. — Very light brownish gray. Of quartz sand there is but a trace. 

 The rock seems to have been a very porous limestone, and coarse, loosely com- 

 pacted sand-rock containing nodules of solid limestone. Some ovules and a 

 few bits of oolite were noted. Foraminifera are numerous, and some (Orbitoides) 

 are as much as 4 mm. in diameter. The Textularias are common. Many bits 

 of madrepore coral. A few spines and plates of echini. Bryozoa are very 

 rare, and gastropods, and even lamellibranchs, are not common. The propor- 

 tion of coarse material and determinable fragments is large. 



1,425 feet. — Color very light yellowish blown. Quartz sand a mere trace, 

 but the grains can be distinguished readily under t he microscope, as is the case 





