Vol. 59.] WELL-SECTIONS IN SUFFOLK. 37 



sign of anything of the sort in the surroundings, though we do not 

 know what there may be in the river-channel. 



Another view is that we may here have the result of a landslip, 

 which took place before the bordering hills had been eroded back as 

 far as now. This, too, would explain the thickness of the Crag, etc. ; 

 but a landslip would not reach to a goodly depth below sea-level, as 

 does the occurrence with which we are dealing. 



Of the four explanations noticed that of a fault seems the best, 

 but I am not satisfied with any. Of course it is open to us to make 

 a combination of two or more of them ; and I leave my brother- 

 hammerers to make the mixture, according to taste. 



Lowestoft and the Neighbourhood. 



It is of interest to know the depth to the Chalk, as well as the 

 nature and thickness of the beds above it, here, especially as it was 

 said, several years ago, that the Chalk had been reached at some 

 60 feet below the sea-level at Lowestoft. This seemed to be most 

 unlikely, as at Yarmouth, about 8 miles to the north, the depth to the 

 Chalk is 52Q feet, and at South wold, about 11 miles southward, it 

 is 323 feet. The depth at Lowestoft ought therefore to come between 

 those figures, and nearer the former than the latter, if the beds are 

 fairly even. It should be noted that the depth to the London Clay is 

 166 feet at Yarmouth and 184 feet at Southwold. 



It is pleasant to find that in this case the inference is justified, as 

 may be seen from the following sections, which are also satisfactory in 

 another way. Mr. F. W. Harmer and Mr. Clement Reid have lately 

 inferred that at Lowestoft it is likely that the Crag should extend 

 down to a depth of about 200 feet, which conclusion is now justified, 

 with something to spare. 



A note of the first section (to the depth of 180 feet) was given by 

 Mr. Reid in the ' Summary of Progress of the Geological Survey for 

 1898/ but without details. 



Lowestoft. Youngman & Preston's Brewery, 69 High Street, at 

 the foot of the old cliff. 1897. 

 About 20 feet above high-water level. 



Made and communicated by Messrs. Islee & Co. (Eemarks in 

 parentheses from notes on specimens, by Mr. Clement Reid.) 

 ^Vater-level 15 feet down. Unsuccessful. 



Thickness. Dejrth. 



Feet. Feet. 



Made ground 5 5 



Sand (clean, gravelly ; dune?) 8 13 



Pebbles (recent beach) 4 17 



Sand (clean buff) 20 37 



Blue clay [?Cuillesford] 24 61 



Sand 9 70 



Clay 8 78 



Sand 127 205 



