192 PROC. COTTESWOLD CLUB vol. xrii. (3) 



The eflfect of the Tunnel, which will be two-and-a-half 

 miles long, on the drainage of the district, will be an im- 

 portant point. In its course it will knock a hole in the 

 bottom of three water-retaining strata — the Upper Lias, 

 the Fullers' Earth, and the Forest Marble. Thus it will 

 give the water of the hills which formerly went eastwards 

 a chance to go westwards. The upper tributaries of the 

 Bristol Avon will be robbed, and the lower tributary — the 

 Frome — will gain. The effect on the water supply of 

 the Badminton district may be very marked. 



Two observations were made at this meeting, from the 

 fossils shown in the Engineer's office at the Cross Hands : 

 — At 132 feet was obtained a specimen of the Gramino- 

 cei'as aalense group ; at 1 78 feet, a specimen of Grammo- 

 ceras striatulum. So the Cephalopod bed — the strata of 

 the Hemerse aalense-striahdi — is 46 feet thick here. 

 This is a considerable increase on what obtains in the 

 Frocester neighbourhood. 



The above notes refer to some of the questions studied 

 during the first three meetings in the summer of 1899. 

 For the fourth meeting, as I was much engaged, the 

 President very kindly relieved me of the work. On one 

 feature of the excursion which he arranged he has made 

 the remarks contained in the next contribution. 



