1912.] 



NOTES ON GEOLOGICAL RESULTS. 



377 



beach at Pleinmont, where, while sinking wells, a deposit 

 was found, inland, at a lower depth than the present beach. 



During the excursion to Lihou Island a patch of beach 

 near the causeway was shown by Mr. Curtis, but as this 

 looked a little doubtful it will need a more careful examination 

 than we were able to give it to determine if it is old beach or 

 only pebbles washed down. 



It will be remembered that one patch of submerged 

 beach was found at Yazon and previously reported, so that we 

 now have three positions for this beach level. 



I have been able this year to place some of the gravel 

 deposits in a definite order, thus : I have found, in two places, 

 well-marked gravel deposits under, but belonging to the 25ft. 

 beach, and I have also found white blown sand under the 

 cliff head rubble, but overlying the 25ft. beach. The white 

 sand is wind-blown and probably marks the upper part of the 

 beach where it exists. This was between the Monument and 

 Divette. At Noirmont, on the Miellette side of the Hougue, 

 the following deposits can be seen in the following order : 

 Decomposed rock — clay layer probably Avashed down from 

 top of Hougue — rubble band. Then on the side of the 

 Hougue at a higher level are the remains of the 50ft. beach 

 as far as its extent goes on this side of the deposit and below 

 is a bed of gravel belonging to this beach. 



We therefore now have the gravel beds underlying three 

 raised beaches, but belonging to them. I do not think that 

 this has been previously reported. 



At Divette I have established the following order of 

 deposits : 



1. Upper Clay — fairly plastic 4 feet. 



2. Upper Rubble — angular stones of small size — Avith 



the upper clay Avashed in 6 feet. 



3. Rubble and Gravel Bands 8 „ 



4. Fluviatile Sandy Clay 2 „ 



5. 25-foot Beach -{Pebbles 4 



Whether the middle band of clay is the same as that 

 to be spoken of next, which contains shells, or not, is still 

 undetermined. Mr. Derrick reported concretions as occurring 

 at Divette, but I have not been able to place them. 



In our Transactions former geological notes contain refer- 

 ences to concretions in clay at Divette, Fermain, St. Martin's 



Concretions 



IN CLAY. 



KNOWN AS " LOSSMANCHEN." 



