414 REPORT—-1899. 
their determination. It is hoped, however, that this and other fresh 
material may be available for a final report next year, summing up the 
evidence as to the great series of interglacial beds commonly called the 
Toronto Formation. 
Drift at Moel Tryfaen.—Report of the Commmuttee, consisting of 
Dr. H. Hicxs (Chairman), Mr. E. GREENLY (Secretary), Pro- 
fessor J. F. BLAKE, Professor P. KENDALL, Mr. G. W. LAMpLuGH, 
Mr. J. Lomas, Mr. T. Metuarp Reape, Mr. W. SHoneE, and 
Mr. A. SrraHAN, appointed to make Photographic and other Records 
of the Disappearing Drift Section at Moel Tryfaen.' (Drawn up by 
the Secretary.) 
APPENDIX. PAGE 
A. Notes by President and Members : - : “ - : i . 420 
B. Foraminifera from the drifts of Moel Tryfaen. By Mr.T. MELLARD READE 420 
C. Diagram Section on N.E. of Alexandra Quarry . : - ; : . 422 
D. Bibliography : 5 E : 3 ‘ 2 422 
Introduction.—In August, 1898, it became known that what is perhaps 
the clearest and most instructive section in the famous high-level drift 
deposits at Moel Tryfaen must in a short time be swept away in the course 
of the quarrying operations. There are two slate quarries on Moel Tryfaen, 
the ‘ Alexandra’ and the ‘ Moel Tryfaen’ quarries, excavated in the same 
line of strike of the slates. Gradually expanding, they had approached 
each other so nearly as to leave a narrow bank between them with no more 
than a yard or twe of uncut turf upon it. Now the drift sections thus in 
Fie. 1.—Map of part of Moel Tryfaen from Six-inch Ordnance Map. 
123! 
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danger of destruction are exceedingly important for the following reasons : 
1. They are at right angles to the strike of the slates, and thus display 
the character of the underlying rock surface. 2. They show the nature 
and position of the junction of the shelly sands and gravels with the over- 
lying boulderclay. 3. The false bedding and other structures in the sands 
? Tryfan in New Ordnance Survey Maps. 
