lately discovered near St. Helen's. 171 



narrow irregular furrows. Some of the ribs and furrows 

 divide and unite without order, and are made up of detached 

 portions having wavy and diagonal directions, which mix, be- 

 come faintly visible, and finally disappear. Impressions of the 

 ribs were taken on tracing-paper, and they exactly correspond 

 in character to those of the Dixon Fold trees. 



No. 2 specimen had been removed from the quarry when 

 I first visited the place. The workmen informed me that they 

 had noticed no roots belonging to it. It is now lying in the 

 adjoining quarry in fragments, and appears to have been about 

 fifteen inches in diameter and nearly cylindrical. The interior 

 of it is composed of a very fine-grained hard stone, which, 

 although not what isgenerally called a sandstone, has more sand 

 in it than the matrix in which it was imbedded, and I did not 

 notice any internal cylinder so often met with in these upright 

 stems, but one of the sides presented a longitudinal depression. 

 The exterior exhibited the scars, ribs, and furrows generally 

 found on the Sigillaria reniformis so distinctly, that there 

 could be no doubt of its being one. 



No. 3 is still standing in its original position in the quarry; 

 it appears to be about eight feet above the sandstone, and four 

 feet of it are exposed to view, the upper part being still covered 

 with clay. The base of it does not plainly show the main 

 roots like No. 1, but on cutting down the face of the clay 

 under it, although the roots had disappeared, I distinctly 

 traced the fibrils or radicles, similar to those of No. 1, radia- 

 ting from the centres, where the roots formerly were, in all 

 directions. From its exposed parts I take it to be about ten 

 inches in diameter ; it is decorticated, and seems to have been 

 cylindrical. I could not see very well-defined scars upon its 

 surface, but its ribs and furrows prove it to be a Sigillaria. 



On examining the matrix near the stem I observed several 

 grass-like fibres, resembling the supposed leaves of the Lepi- 

 dodendron, running horizontally from it, but as I could not 

 distinctly trace their insertion, I will not take upon myself to 

 pronounce them leaves, although they were very like those 

 supposed to be such by my friend Mr. M. Dawes, F.G.S., in 

 one of his specimens now in the museum of the Manchester 

 Geological Society. At some future time, when the tree is 

 more exposed, I shall be able to give a more decided opinion 

 on this subject. 



In conclusion I may state, that there is no question as to the 

 perfect identity of No. 1 specimen with No. 5 at Dixon Fold, 

 which the late Mr. Bowman, after a very careful examination, 

 pronounced to be a decorticated Sigillaria. I am aware that 



