133 



strong desire to retain the drawings I have supplied you with, since the 

 commencement of the work. This I shall have no objection to allow, if 

 you have any loose sheets of such of them as have been engraved, which 

 you can send me, in which case you can retain the originals in your col- 

 lection. [This arrangement was, we understand, never carried out on 

 Mr. Hutton's side.] 



No. 1 is a very peculiar little Plant .... etc. . . [This 

 paragraph is given in full in the reference to our Plate LVIL, page 109. 

 This Plate is a reproduction of the drawing described. The next 

 paragraph, describing Drawing No. 3, is in a similar manner given in 

 the reference to our Plate representing it, Plate XXXVIII., page 77.] 



No. 5 is a specimen found whilst pursuing my researches amongst 

 the limestones of the Upper Coal Measures. The long leaf is Neu- 

 ropteris cordata, which you have figured from Buckland's specimen 

 ["Fosil Flora," Plate XLL] The other I suppose to be a Cyclopteris, 

 different from anything I have seen before. The Neuropteris cordata, 

 from Leebotwood, is found in connection with some fresh water lime- 

 stones, of which Bowman, of Wrexham, has given me specimens, 

 containing minute fresh water shells, and also in the same neighbourhood 

 they have, I believe, Megalichthys and other remains of fish. My 

 specimen I found under similar circumstances. At the top of our 

 Coal Measures we have a group of fresh water shales and limestones, 

 containing Planorbes, Unios, Entomostraca, apparently a Cypris, 

 Megalichthys Hibberti, Palseoniscus, Coprolites, and other remains of 

 a larger fish; and between two of the main seams of limestone was 

 a thin shale containing the above specimen, together with Lepido- 

 dendron Sternbergii, Stigmaria ficoides, Calamites, and several other 

 coal plants. The shale is very soft, and about the colour I have given 

 it in the drawing. See Phil. Magazine, August and September, 1836. 

 The geological position of the Leebotwood limestone is nearly the same 

 as ours, showing something like a connection between our Lancashire 

 and the Shrewsbury coal-field. 



I suppose you have not met w T ith any of the fish at Ferry Hill [in the 

 Permian Marl Slate there] I wrote to you about. My friend Professor 

 Johnstone, of Durham, told me the other day that the workmen are 



destroying numbers of them 



Yours sincerely, 

 (Signed) W. C. Williamson. 



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