MEETINGS. 359 



REPORT OF THE GEOLOGICAL SECTION. 



As has been already remarked in previous reports, the 

 work of the section must of necessity be small and the annual 

 results meagre, the limited ground forming its field having 

 been gone over for so many years. Still occasions arise in 

 the progress of excavations, for drainage and other works, of 

 obtaining information by which the conclusions drawn in 

 former years may be strengthened or corrected, so that the 

 section is not without hope that it will continue to add to the 

 knowledge of the geology of the island. For this year, 

 however, Ave have to be contented with small things, but we 

 publish our results with the expression of a hope that next 

 years transactions will contain a fuller report. 



A.— SUPERFICIAL DEPOSITS. 



l.—Piette, St. Peter-Port. 



Mr. P. E. Robilliard having purchased ground from 

 Mr. W. H. Smithard for the purpose of increasing his timber 

 yard, has lowered the level thereof by excavation to the 

 extent in some places of about ten feet. This excavation 

 shows in every part sandy clay with angular pieces of diorite, 

 and may be termed head, resembling the formation in the 

 Vrangue Brickfield lower pit. No pebbles were met with 

 nor was there any trace of peat. The excavation nowhere 

 reached the rock in situ, although it could not be far off, 

 judging from the large size of the pieces of diorite found at 

 the lowest level exposed. 



2. — Ruettes Br ayes. 



An excavation in the field below " Le Hechet " shows a 

 thickness of from four to six feet of yellow earth, disposed in 

 strata alternately, sandy and clayey, as at Route Isabelle and 

 many other spots in this island, resting on decomposed gneiss. 

 The stratification though very distinct is as usual irregular, 

 but on the whole follows the slope of the hill. The under- 

 lying decomposed rock is pseud o-stratified, indicating move- 

 ment of its particles towards the valley. 



B.-ROCKS. 



The Road Rock, St. Peter-Port Harbour. 



The summit of this rock having been exposed by 

 dredging, and thus rendered dangerous, divers were employed 



B 



