34 ME. W. WHITAKER ON SOME [Feb. IQO3, 



> 



To these may now be added a well-section at a ninth place, 

 which it will be seen gives a like result. 



[In all the following sections words in square brackets have been 

 inserted by the writer.] 



"Woodbridge. Castle Brewery (Messrs. Lockwood ? s). About 

 100 yards south-west of St. Mary's Church. 1899. 



Made and communicated by Mr. F. Bennett, of Ipswich. 



Cylinders had to be used, owing to the running sands. 80 feet 

 of tube (internal diameter = 6 inches) driven to 83 j feet below the 

 surface. 



Good supply, from 8000 to 9000 gallons an hour. 



Thickness. Depth. 



Feet. Feet. 



Made-up soil 4 4 



r-o r, . -. f Running sand 7 11 



[Red Crag. d in ° \ ,~ 



L J [Red Crag 4 lo 



[London Clay.] Blue clay 31| 46£ 



! Running sand 5* 52 



Brown clay 3-k 554 



Sandjloai 5* 60| 



Light-coloured running sand 5 (i5^ 



Sandy loam , 5| 71 - 



Mottled clay 3* 74.4 



Chalk 120* 195^ 



In the three of these cases where we are without information as 

 to the relation of the top of the Chalk to Ordnance-datum, there 

 can certainly be little difference from the other six, and we may 

 take it that there is a variation of only 30 feet. 



In some cases, unfortunately, the topmost beds are unrecorded, 

 being pierced in old wells ; but in no case is the depth to Eocene 

 beds more than 40 feet (probably not reaching that figure), except 

 in the one case at a high level, where as much as 74 feet of Drift 

 and Crag were found, though how much of each is unknown. 



It is clear, therefore, that we have here as much regularity as 

 can be expected ; and the newly-formed Waterworks Company was 

 therefore justified in looking forward to a result in accordance with 

 what had gone before, in making its trial-boring in the town, on 

 low ground, and at no great distance from some of the existing 

 borings. 



But the following section shows a very different state of things, 

 with a depth to Eocene beds of 133J feet, and a thickness of Crag 

 much greater than any before known in the neighbourhood ; about 

 double, indeed. 



It may be useful to add an analysis of the solid contents of the 

 water, which shows that it cannot be classed as a Chalk-water. 



Woodbridge. Trial-boring for the Waterworks Company. About 

 150 yards north of the Gasworks. 1901. 



18 feet above Ordnance-datum. Rest-level of water 18 feet down. 



Made and communicated by Messrs. Isler & Co. (Remarks in 

 parentheses from notes on specimens, by Mr. H. B. Woodward.) 



