6 Canadian Record of Science. 



tinet layers, and rich in phosphate of calcium. Under the 

 lens it is seen to contain fragments of bones of small reptiles 

 and of chitinous matter of millipedes or insects. It is in 

 short in some places a very fine bone-breccia and in others 

 an indurated guano. 



The whole of the material of this tree was carefully taken 

 out by Mr. McNaughton, with the aid of Mr. J. Devine, 

 and packed in boxes, keeping separate the lower, middle 

 and upper portions, and is now in process of being split up 

 and examined — a work requiring much time and labour. 80 

 far as yet observed, the species represented are Dendrerpeton 

 Acadianum and D. Oweni and Hylonomus Lyelli, which, as 

 in all trees hitherto examined; predominate in numbers. 

 Hylerpeton Dawsoni and H. longidentatum also occur, and 

 there are bones which probably indicate two new species. 

 Pupa vetusta also occurs, though rarely, and there are 

 numerons fragmentary specimens of millipedes of the gen- 

 era Xylobias and Archiulus. This tree is remarkable above 

 all others hitherto found for the great thickness of the pro 

 ductive layers and the abundance of coprolitic matter, 

 which probably indicate that it remained open a long time, 

 and that some of the animals continued to live and subsist 

 on their feebler companions for some time after they fell 

 into it. It results, however, from this that the bones of the 

 smaller species are much scattered. The devourers of 

 these smaller animals would seem to have been the species 

 of Dendrerpeton whose bones are least scattered, and in 

 some ceses associated with carbonised cuticle. One speci- 

 men of Dendrerpeton Acadianum is the largest yet found, the 

 skull being 4 inches in length. It may have been nearly 

 3 feet long, and could not therefore extend itself within its 

 prison. 



The second tree found by Mr. McNaughton is in Division 

 4, Section XIII, Group 20, of the Section. It is thus 203 

 feet 7 inches below the original bed at Coal-Mine Point, and 

 is about half way between this and the new tree in Group 

 26. It is remarkable as standing on a bituminous shale, 

 one of the few beds of this kind which have been elevated 



