26 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [NOV. 5, 



cated by the present position 

 of the deposit, any disin- 

 tegrated heavy substances 

 lying lowest. 



In process of time, the 

 obstruction at the entrance 

 being removed, the water 

 would enter in greater vo- 

 lume, and, carrying in mud 

 and vegetable matter, would 

 then, no doubt, pass through 

 filtrating media to several 

 points of efflux — namely, 

 springs, which in former 

 years were numerous in the 

 lower part of the vale, and 

 which are now all cut off. 



Sections. — As the position 

 of the materials in Mr. Bol- 

 ton's Section, fig. 1, would 

 negative the possibility of a 

 cavern there, inasmuch as 

 there can be no caverns or 

 cavities in gravely I am com- 

 pelled to question its ac- 

 curacy. 



Besides the information, 

 in his own hand-writing, 

 obtained from the principal 

 man engaged in sinking the 

 shaft, the one particular, 

 that gravel and sand are at 

 the top, has been corrobo- 

 rated by three other miners. 

 The first attempt to sink in 

 this gravel and sand was, at 

 the depth of 5 feet, obliged 

 to be abandoned, it was so 

 full of water ; and the dis- 

 appointment attending that 

 loss of time and labour is 

 well remembered. 



In fig. 1 of Mr. Bolton's 

 paper, two beds of " Black 

 Muck," with a thin vegeta- 

 ble clay-bed betwixt them, 

 are made to lie next upon 

 the limestone in the drift ; 

 whereas I have it on the 

 authority of four of the 



