lxxvi 
PROCEEDINGS. 
“ race ” in places 5 ft., basement-bed 7 ft. 6 ins. (with a 3 in. 
bed of pebbles at tlie top and a thinner band of flint-pebbles at 
the bottom) ; Eeading Beds : pale sand 16 ft.; total 43 ft. 6 ins. 
In the upper pebble-bed several teeth of Lamna and one of 
Odontaspis (?) were found. The total absence of the Eeading 
Clay was remarked upon by Mr. Kidner, who quoted 
Mr. Hopkinson’s statement as to its partial absence in 1872: 
“ the basement-bed reposing in one part of the pit immediately 
on the mottled clay, and in another on the sand.” Traces only 
of clay can now be found among the pebbles at the bottom of 
the basement-bed. 
The additions to the Library since the year 1906 will be given 
in the next volume as a single list, instead of the former annual 
lists. 
Trans. Hertfordshire Nat. Hist. Soc., Vol. XIV, Part 4, July , 1912. 
