I 



MONTHLY SUMMARY. 



79 



ROYAL HORTICULTURAL 



SOCIETY'S WELL. 



TRAFALGAR-SQUARE WATER- 

 WORKS' WELL 



Engine-house Floor 



, Engine -house Floor. 



Made Earth. 





Gravel and Loa"ni3 



little water. 



I 



"Water level in well. 



London, 



or 



> H 



Blue Clay, 



00 



;d 





Mottled Cla^' 



Pebbles and Satid. 



Green Sand. 



Running Grey fcjaud. 

 Flint. 



Chalk. 



-X 



o 



^ 



^T. 



I 

 « 



rt 



•? 





I 



CO 



o 



I 



I 



I 



> 



I 



t 



I 



I 

 I 

 > 



I 



Made Eai-th. 

 Sand and Gravel. 



London, 



or 



Blue Clay. 



VI 



Mottled 'Ciay. 



Sand and Gravel. 



Green Sand. 





Chalk, 







i 



g2 



