130 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [NoV. /, 



/. The next erect trees are found 164 feet higher up, in the sand- 

 stone No. 163 ; here we have two large fluted Sigillarise, 24 inches 

 in diameter and 5 feet in height, standing only eight feet apart : they 

 enlarge rapidly towards their bases, and were probably rooted on the 

 surface of the three-inch coal Xo. 161, but being very near the high- 

 water line the surf has washed out the soft, argillaceous shale Xo. 162 

 from under the stems, and obliterated all traces of roots. 



TTe now arrive at a group of strata, the lowest only 28 feet above 

 the preceding, exceedingly rich in upright trees, all standing in view 

 together at six distinct levels within a vertical height of 52 feet. 



ff. The first in the series are three large trunks in the shale X'o. 1 75, 

 apparently 30 inches in diameter ; they are situated too high up in 

 the cliff to be examined properly ; they all bulge out as they descend. 



and seem to terminate downwards in the argillaceous shale above the 

 coal X"o. 172. 



h. Some of the trees in the beds Xos. 183 and 185 have been already 

 described in the Journal of the Society* ; but since that description 

 was written, owing to the constant wasting of the chfPs, several new 

 trees have been exposed, particularly a fine fluted Sigillaria, 18 inches 

 in diameter (seen in fig. 7), ^ith strong roots penetrating down- 

 wards at an angle of 45"^, and piercing through the three-inch layer 

 of mixed coal and shale X"o. 182. 



i and Jc. In the arenaceous shale X'o. 183, several small Sigillariae 

 are found at two distinct levels, some being rooted about the middle 

 of the bed and others near the top. They have Stigmaria roots with 

 rootlets, which, as before mentioned, have already been described in 

 this Journal f. 



l. Two small SigillariEe occur in bed X'o. 185 : Stigmaria roots are 

 seen near them, but not in actual contact. 



7n. The shale roof Xo. 189 of the Main Coal has famished a great 

 number of upright trees with long spreading roots and rootlets, which 

 it is not necessary to enumerate here, three of the most interesting 

 having been described at length in the Journal, viz. a Lepidoden- 

 dron;]; with Srigmaria-like roots, and two curious specimens of Sigil- 

 laria alternans%. I may observe that Sigillarise appear to be the 

 most common, but I have never seen any larger than 14 inches in 

 diameter. 



Vol. ii. p. 393. 



t Hid. 



Vol. iv. p. 46, 



Vol. V. p. 354. 



