356 



THE CARBONIFEROUS SYSTEM. 



a plantigrade appearance to the tracks. Rain-marks had been im- 

 pressed on the surface after the animal had passed over it, and these 

 had probably aided in obliterating the finer parts of the impressions. 

 These observations were published in the Journal of the Geological 

 Society of London, vols. 1 and 2. 



Shortly afterward, Dr Harding of Windsor, when examining a cargo 

 of sandstone which had been landed at that place from Parrsboro', 

 found on one of the slabs a very distinct series of footprints, each with 

 four toes, and a trace of the fifth (Fig. 139). Dr Harding's specimen 



Fig. 139. — Footprints of Dendrerpeton [f] from Parrsboro', — slab loith footprints reduced, 



and two impressionSi ■natural she. 



is now In the museum of King's College, Windsor. Its impressions 

 are more distinct, but not very different otherwise, from those above 

 described as found at Horton Bluff. The rocks at that place are 

 probably of nearly the same age with those of Parrsboro'. I after- 

 wards examined the place from which this slab had been quarried, 

 and satisfied myself that the beds are Carboniferous, and probably 

 Lower Carboniferous. They were ripple-marked and sun-cracked, 

 and I thought I could detect trifid footprints, though more obscure 

 than those in Dr Harding's slab. Similar footprints are also stated 

 to have been found by Dr Gesner, at Parrsboro'. In these Parrsboro' 

 beds Mr Jones, F.L.S., has recently found a series of larger footprints 



