secretaey's report. 1906. 
207 
was seen, the dark limestones and shales having disappeared,, 
and their place being taken by a massive, white limestone, full 
ot encrinites. Another decided change was found at the Angram 
trench, where a couple ot dark limestones, separated by a shale 
parting, overlaid a considerable thickness of bkck shales, the 
bottom of which was not seen. 
At the top of the section, thin limestones and shales, bent 
and faulted, were overlaid by Millstone Grit, whilst the lime 
stones underlying the shales on either side of the trench were 
much faulted. On tiie leturn journey a careful examination 
was made of the beds in the dry river-bed between Manchester 
and Goydon pots, and the dry river-course was followed to 
Lofthouse, the succession of limestones being carefully examined. 
At the General Meeting held at the Crown Hotel, Patsley Bridge, 
under the chairmanship of Dr. Wheelton Hind, Messrs. H. 
Lofthouse (Harrogate), C. F. Mott, M.A. (Giggles wick). Percy 
Lund (Bradford), and the Rev. G. Percy H. Frost, M.A. (Bedale), 
were elected members and Alderman J. T. Simpson, J. P., was 
elected Local Secretary for Harrogate. 
An address on " Life Zones in the Carboniferous rocks of 
Yorkshire " was given by the Chairman. Until lately very little 
success had attended attempts to zone the Carboniferous 
rocks, but the results of Dr. Arthur Vaughan's efforts in the 
Bristol area had put quite a new complexion on that branch 
of investigation. In the gorge of the Avon a magnificent section 
of the Lower Carboniferous rocks was exposed, unfaulted and 
complete, and from this Dr. Vaughan had been able to secure 
evidence of definite fossil horizons, which could be traced over 
wide areas. Passing northwards, however, the lower part of 
this zonal series was found to be wanting, and all we had in 
Yorkshire were the upper zones — characterised by Productus 
giganleus for the older geologists and known as vise by the 
Belgians. Also in Wales Dr. Hind had found that the whole of 
the lower zones had been cut out. In Yorkshire, for instance, 
under Thornton Force. Ingleton, on the upturned edges of 
Coniston Grits, is the basement conglomerate ot the Carboni- 
reroas : but it contains a fauna characteristic of the higher 
zones ot the Bristol area. Thus the seas in which the lower 
