NATURAL HISTORY SOCIETY OF GLASGOW. 219 



a tendency in some cases to taper into a point. It is evident that 

 this did not take place at the time of the fracture, but that they 

 have thus grown since the accident occurred. 



II. — On a Section of Lower Carhoniferous Limestone Strata, exposed at 

 ScuUiongonr, on the North Hill of Campsie. By Mr John 

 Young, F.G.S. 



Mr Young stated that during the working of the main limestone 

 by the lessee, Mr Kirk, a new tract of rock had been opened up, 

 lying on the hill-side, between the old quarries on the east, and 

 the "Craw Road." After removing the overlying boulder-clay and 

 shale from the top of the limestone stratum, the rock was found to 

 contain many vertical fissures, some of which were completely 

 filled up with a very fine vegetable pulp, in which were embedded 

 considerable numbers of well-preserved hazel nuts. As these 

 could not have passed into the fissures of the limestone from the 

 present surface (the shale and boulder-clay being over fourteen feet 

 in thickness), it became a point of interest to determine how they 

 got there. The conclusions at which he had arrived, led him to 

 believe that the higher rocky front of the hill had, in some remote 

 period of time, been covered by hazel and other trees, which 

 now no longer exist on the above tract. Streams descending from 

 the hills would carry the nuts and vegetable matter, in the first 

 place, into the numerous fissures of the trap ; and with the 

 descending water, they would be carried forward into those which 

 traversed the limestone strata, where they ultimately found a 

 lodgement. On a late visit, he had observed that a considerable 

 stream of water was still pouring out of one of the fissures of the 

 limestone, which water must have entered the strata at a higher 

 point of the hill. 



Mr Young concluded by observing, that many of the nuts had 

 their kernels extracted by squirrels, a neat round hole being 

 gnawed through the shell. The nuts were also larger than those 

 wliich now grow in the Campsie glens, implying some slight 

 changes in the climatal condition of the district. 



