Remarks on the Dapple Bed of the Inferior Oolite at the Horsepools, 
and on some Pebbles from the Great Oolite at Minchinhampton, 
by W. C. Lucy, F.G.S. Read March 19th, 1889. 
In the Paper I read before the Club in March last, on the 
“‘ Jurassic Rocks at Crickley,” I referred to the Second Meeting 
of the Club in 1846, recorded at page 6 of the “Origin of the 
Cotteswold Club,” in which it is mentioned that on Hudding- 
knoll Hill at the Horsepools, the late Mr Hugh Strickland 
called attention to some quartz pebbles in the quarry, and also 
to some pebbles of Oolite; in some cases embedded in other 
Oolite, distinguighed from the matrix in which they are enclosed 
by a difference in colour and texture; thus evidencing the 
destruction of older rocks of the same nature during, or previous 
to, the deposition of the existing Oolite. 
I have found similar pebbles at the Haresfield section, 
and Mr S. 8S. Buckman has met with them at Randwick. 
I also stated that in my Section No. 2, there was a pebble 
bed, and it appeared to me to be the same as that mentioned 
above. This, however, from a careful examination of the 
Huddingknoll quarry, I find is not the case, as the Crickley 
pebbles—assuming they are really pebbles and not concretions— 
occur in higher beds. 
I have several times visited the quarry, and on one occa- 
sion I had the advantage of being accompanied by Professor 
Etheridge, whose views of the nature and origin of the 
supposed pebbles I shall have occasion to bring under your 
notice later on. 
The bed is known by the quarrymen as the “ Dapple bed,” 
which accurately expresses its appearance, as will be seen by 
the large specimen of the rock now on the table. 
