"WATFOED NATURAL HISTORY SOCIETY. XXlll 



Prestwicli in his paper on "The "Woolwich and Eeacling Series," 

 communicated to the Geological Society in 1853.* 



Feet. 

 Gravel, chiefly of flint-pebbles in claj", averages 4 



Loudon Clay. \ *• ^^^"^ ^1?*^ ^'1^*^ ^ ^'^^ ""'^^^"^ '^^I'*'""^' ^^ 



( a. Layers ot laminated grey and brown clay 3 



Basement Bed of the > c. Layer of imperfect scptaria full of fossils f 0^ 



London Clay, 3^ | h. Light brown sandy clay 2 



feet. ( a. Flint-pebbles in clay 1 



' h. Umber-coloured clay, in places slightly mottled 



red and yellow 2 



g. Fine siliceous sand, in places very white • 3 



/. Light-coloured soft sandstone with an occasional 



pebble — variable 1 



e. Light-coloured siliceous sands with a few seams 



Woolwich and Bead- j of grey clay, the lower part coarser, yellow, 



iiio- Series, 31 feet. ' and brown 10 



d. Laminated grey and yellow clay and sand, with 



an under-seam of pebbles 1 



c. Yellow and ash-coloured sand with seams of 



grey clay 8 



h. Grey clay laminated with sand 4 



(_ a. Large unrolled flints, apparently white-coated 2 



5U 

 Chalk To' 



Several sections exposed in the brickfields at various parts of the 

 hill were examined, and at the chalk -pit Mr. John Evans drew 

 attention to the perfectly level surface of the Chalk, which seemed, 

 he said, to be a surface of marine denudation. 



After returning to Boxmoor the chalk-pit on Rough Down, chiefly 

 known as the place from which Mr. Evans has obtained most of the 

 fossils of the Chalk-rock, was to have been visited, but tea proved 

 a greater attraction, and there was not time to spare for both ; so, 

 after only a distant view of the band of chalk-rock, which here 

 divides the Upper from the Lower Chalk, the party separated, most 

 of the members of the two societies leaving Boxmoor station by the 

 7-37 train for Watford and London. 



PiELD Meeting, 1st June, 1878. 

 St. Alba>'s. 



The object of this meeting was to collect, in conjunction with 

 members of the Quekett Microscopical Club, microscopic objects in 

 ponds in the neighbourhood of St. Albans. 



For this purpose members of the two societies assembled at the 

 London and North- Western Station on the arrival of the train 

 from London and Watford at about half-past three, and, after 

 walking a short distance along the line, took a lane leading towards 



* ' Quart. Journ. Geol. Soc.,' vol. x. p. 90. 



t The Bitrupa plana abounds, together with Ostrea BeUovachia, a few Katica 

 glaucinoides, a Fusus, and teeth of Lamna. 



