3 
a nortlieasterly ^ and once a soutliwesterly dip. 
In the yellov/lsli and dark brom claj^ near the upper- 
most part of the section at Gay Head, and in the green- 
sand immediately resting upon it^ Ilr. Lyell found the 
tsath of a sharlc, that of a seal, vertebrae of Cetacea, 
crustacean remains, and casts of Tellina and Ilya. These 
prevail at intervals through a thickness of nearly one 
hundred feet, and tire follov/ed by beds of sand and clay 
with, lix^nite. Ilr, Lvell found no remains in the red 
clays* Ilany rolled "bones were found in the osseous 
conglomerate • 
In the section at Chilmark similar strata to those 
at Gay Head occur ^ but the general dip is southwest. 
Some of the folds ^ however ^ give anticlinal dips to the 
northeast as well as the southwest ^ and there are many 
irregularities^ the beds being sometimes vertical and 
twisted in every direction* Several faults are seen, 
and veins of iron- sand, wiiich intersect the strata like 
narrow dykes, as if there had been cracks filled from 
above. One bed of osseous conglomerata at Ghilimrk, fou 
yards in thickness, is -vertical, and its strike ib well 
seen to be north 25*^ east, so that the disturbances have 
e"\ridentlv been so r^reat that it would' be difficult with- 
M ». — ' 
m- »«B »«« «•«» i»» ■>■<**■ fw* '!»* '-a* »•«• WW »"s« >t«i «w(« ast mm mm ss* tm vm «*« "at m-.* s»* ws* ■:-« i-m »-« -»* *»• w» «»• <us» -.■»». i»« 5»« i»» mm -sa* «« ■*!# *•»■ .">*■ »» f»* 
flJOB, 5 and 6 of Prof* Hitchcock ^s section. 
