Mollusks. 9149 
and deep indentations, produced by the blended operations of multi- 
tudes during many generations. 
Prof. Buckland to William Baker. 
Oxford, May 29, 1842. 
Your last kind and welcome letter arrived as I was starting for 
London, and demands my best thanks for your successful exertions in 
the field of Cannington Park, which I shall be tempted to revisit, I 
hope in your company, the next time I am at Bridgwater. I shall 
be obliged if you will have the kindness to forward by railroad luggage 
train to London, on Friday night, the specimens you have kindly col- 
lected, * * * addressed to me at Geological Society, Somerset 
House, London, where I shall be on Wednesday. * * * I want 
to take the limestones to the meeting of the British Association at 
Manchester, to continue the discussion of this subject, which began 
at Plymouth last year, and you will oblige me by allowing me to lay 
before the meeting your last letter to me upon this subject. With 
respect to the size of the stones,—the larger they are the better, and I 
am especially desirous to have the evidences you mention of the dif- 
ferent effect of weathering and snail drilling. Also I shall value a 
slab having its under surface marked with indentations from the com- 
plex action of multitudes during many generations. 
William Baker to Prof. Buckland. 
Bridgwater, May 31, 1842. 
I have sent off by this evening’s train, addressed as requested in 
your favour of the 29th, two baskets of specimens; one containing 
red sandstone, the other perforated limestone from Cannington Park. 
* #* * JT did not bring from the hill one of the slabs having 
extensive indentations on the under surface, but will procure one in 
two or three days, which shall be forwarded to you at your request. 
You will see on the large perforated specimen that many of the snail- 
holes in the upper part have been worn into by the action of the 
atmosphere. 
Prof. Buckland to William Baker. 
Oxford, June 10, [1842]. 
Pray accept my best thanks for your baskets, which arrived last 
Wednesday at the Geological Society, London. Your snails are 
capital workmen, and their boring apparatus is the acid that you may 
