3o6 PROCEEDINGS COTTESWOLD CLUB 1912 



36. The junction of the sand and clay in Coronation Road was observed 



in a trench for a sewer. At the Prestbury-Road end 6 feet of 

 sand was proved without reaching the Lias clay. 



37. Formerly there was a small sand-pit here. Along the boundary- 



line between (37) and (20) the gravel and sand occurs in very 

 irregular patches. 



38. The sand is seen here in the bank alongside the road. 



39. The area between Lynworth Farm and Oak Bank was a difficult 



one to map because here and there are thin deposits of gravel 

 in pockets and " veins " ; while in places near the margin of 

 the clay-area the ground is loamy. On the other hand sand 

 has been obtained from the Cemetery and put on the clay- 

 ground of the garden of Prior's Lodge. The boundary-line to 

 the north of Prior's Farm owes its unnatural look to the fact 

 that the ground at the southern end of the Cemetery is made 

 ground — sand has been tipped there. 



40. A well here shows a thickness of 20 feet of sand. 



41. The junction of the sand with the clay is well seen here. 



42. Sand, 16 feet thick, was observed. Its base was not reached. 

 43-44. The Cheltenham main sewer (5 feet high) between (43) and 



(44) revealed 15 feet of sand all the way, without the base 

 being seen. At the corner of Cambray sand, over 20 feet thick, 

 was seen without any indications of the base. 



45. Sand with gravel-layers similar to that seen in the pit near the 



Charlton- Kings Laundry was temporarily worked here. At 

 " Hazlewood " College Road, 30 feet of sand was noted. 



46. Sand, 15 feet thick, on clay. 



Excavations on the site of the Gloucester- Road Council Schools showed 

 that the sand was from 3 to 6 feet thick and rested upon blue Lias 

 clays of raricostati date. 



The pit in Sandfield Gardens is in work. Sand, traversed by irregular 

 and intermittent layers of gravel, is exposed to a depth of 15 feet. 

 The following " derived fossils " were collected : Dactylioceras sp., 

 Belemnites, Cardinia attenuata, Chlamys priscus (armati), Pteria 

 inaqiiivalvis {capricornus) Terebratida fimbria, Rhynchonella subangii- 

 lata, MontUvaltia (Lower Trigonia-Grit), etc. The sand-pit in 

 Brighton Gardens showed a similar deposit to a depth of 6 feet. 



Where the words " sand thin " are printed on the map the blue Lias 

 clay is very near the surface. An account of the sections revealed 

 during the construction of the Arle Sewer will be found in the Pro- 

 ceedings of the Club, vol. xvii., pt. i (1910), pp. 53-56. 



In certain places around the margin of the sand-bed con- 

 siderable difficulty has been experienced in arriving at a 

 decision as to where precisely the boundary-line of the sand-bed 

 should be drawn on the map. To take a particular case : 

 fig. 3 is a sketch section along the line marked " Section I." 

 on the map. Here the sand, with its underlying, sporadically- 

 distributed gravel, once extended up to and rested upon the 

 clay-bank on the north side of the brook. The brook, how- 

 ever, has carved out a hollow, with a bank on its south side, 

 of which the lower "portion [b-c) is clay and the upper portion 



