IX 



Feet. 



1. Eoestone (Buckman), Shelly Oolite of Brodie 



2. True Pisolite, Pea-grit ... about 10 



3. Coarse-grained Oolite, containing much Silicious 



matter ... 13 



4. Foxy^ coloured Ferruginous Oolite, very Silicious to 



bottom of quarry ... 20 



43 



This, which I had then no means of accurately measuring, I 

 find to approximate so nearly with Mr. Strickland's detailed sec- 

 tion, as given in the 6th vol. of the Journal of the Geological 

 Society, that I am induced to think the section as now exposed 

 reaches very nearly to the Lias ; at all events when I saw the 

 Lias and Oolite in contact at this very spot there was a sudden 

 and abrupt transition from the Oolite to the Lias, there being at 

 this place none of the Inferior Oolite Sands of the Ordnance 

 Surveyors. 



In reference to the basement bed of the Oolite, I quote from 

 Mr. Strickland's paper the following remarks : 



" (7) Ferruginous beds, consisting of coarse Oolite in the upper 

 part, and of a very peculiar large-grained Oolite or Pisolite 

 ('Pea-grit') in the lower. A few miles to the south the Pisolite 

 disappears, and is replaced near Painswick and at Haresfield 

 Hill by strata containing ferruginous oolitic grains in a brown 

 paste. This is the precise equivalent of the well known Oolite of 

 Duiidry, near Bristol, which may be recognized as far off as 

 Bridport, on the Dorset coast. At Leckhampton the Pisolite 

 rests upon a few feet of ferruginous Oolite and Sand ; the total 

 thickness of this portion of the series is 42 feet." 



The observations here made, coupled with a somewhat length- 

 ened examination of these lower Oolite beds, both north and south 

 of Leckhampton, induced me to venture to suggest to the meeting 

 of the Geological section of the British Association, and again to 

 our Cotteswold brethren at Leckhampton Hill, an opinion that 

 the Silicious oolite, by which the Pisolite at Stow, Winchcomb, 

 Leckhampton, and Crickley is underlaid, was the representative 

 in time of the Oolite Sands of the Stroud and Painswick districts, 

 an opinion which I am still inclined to favour; however, the 

 details of this matter would be much too long for an address like 

 the present, but I still hope to be able to find time to arrange the 

 material I have got together on this subject before the close of 

 the present session. 



To recur to the doings at this meeting. At Leckhampton the 

 party was joined by two ladies who kept up well with the field 

 Naturalists along the top of Leckhampton Hill to Hartley Bottom 

 and the Seven Springs. 



Returning by way of Charlton Common and the Sandy Lane, 



