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830 feet, and the marl lying on ladio- 

 larian earth. The road next turns 

 slightly westward and again south- 

 ward, exposing sections through the 

 GIohigerma-Tiia.vls, in which many 

 sharks' teeth occur. It then descends 

 gradually, until, at a level of about 

 780 feet, the Globigerina-mails are 

 abruptly terminated against locally- 

 contorted radiolarian earth, the latter 

 dipping to the fault in a north-north- 

 westerly direction, its general dip 

 being (as seen lower down on the road, 

 to the south-west. This fault is a pro- 

 longation of that (F. 2) mentioned as 

 seen on the road south of the turn to 

 the Police Station. 



We have, therefore, evidence of the 

 existence of five faults on Bissex 

 Hill, two of them (F. 2 & F. 5) 

 forming the southern and north- 

 western boundaries of the tract 

 occupied by the Glohigei^ina-marls. 

 Pault No. 4 does not seem to shift 

 the boundaries of these beds, and must 

 be therefore of anterior date. 



The existence of these faults is 

 confirmed by the outliers of the 

 Oceanic Beds and of the Glohigerina- 

 marls which occur in the neighbour- 

 hood, as shown in the map (p. 542). 

 For the purpose of this paper, it is 

 only necessary to describe the outlier 

 on the ridge at Endeavour, and at 

 Monkey Hill, north-west of Bissex 

 Hill. Here fault No. 2 is seen cut- 

 ting off beds of radiolarian earth, 

 which dip at a high angle to the north- 

 north-west, and bringing them against 

 the Glohigervia-mails. On the north- 

 ern slopes of the ridge the marls are 

 observed lying upon the radiolarian 

 earths in a manner similar to that 

 seen on the north-eastern slope of 

 Bissex Hill. On these outliers the 

 Glohigerina-m.£iYh are in places capped 

 by masses of reef-rock, passing into true 

 coral-rock, which lie conformably upon 

 the Glohigerina-jnsLTls. 



The structure of Bissex Hill is 

 shown in the accompanyiDg section 

 (fig. 2) crossing the hill from north- 

 west to south-east along a line a little 

 east of the Police Station. 



