149 
Figs. 1 and Z are from Osmington near Weymouth, they 
were found ina mixed stratum with a muddy debris, and 
the shells seem as if they had suffered but little change by 
their general aspect, as if indeed they had only lain in mud 
and dirt so as to begin to lose a fresl appearance, such as 
might be expected in a few months, but as they are found 
upon examination to be changed into crystallized Car- 
bonate of Iron? they are certainly preserved under other 
circumstances. 
Fig. 3 shows part of an hinge from Whitenab. Fig. & 
iS a specimen from the same place. 
