496 ON THE PALZHOZOIC ROCKS BENEATH NORTHAMPTON. 
ralization of Mr. Etheridge. He thought there was no proof of the 
non-existence of Carboniferous basins in the central area. The 
absence of coal in the district was not proved. He praised the 
author for his caution in expressing doubt as to the age of the red 
rocks met with at Gayton. 
Prof. Jupp pointed out that while only one deep boring was 
known before in the Northampton area, the author had added re- 
cords of four others, three of them from his personal observations. 
He thought that as normal Trias had occurred in three of the four 
borings near Northampton, the abnormal beds in the same position 
at Kettering road were probably of the same age, though perhaps 
in an altered condition. He was inclined to refer the red beds at 
the bottom of the Gayton boring to the Carboniferous rather than 
to the Old Red Sandstone, seeing that these red strata alternate 
with ordinary Carboniferous sandstones full of plant-remains. He 
compared these Carboniferous strata with the Calciferous Sandstone 
series of Scotland. 
Dr. Hicxs asked if the breccia at a depth of 712 feet in the Orton 
boring had been carefully examined. He thought it contained 
fragments of a crystalline limestone and of the underlying quartz- 
felsite, and was worthy of the most careful examination. 
Mr. Cotzins asked if the amount, as well as the direction, of the 
dip of the rocks was unknown. 
The Presrprnt stated that the breccia at Orton had not been 
among the specimens forwarded to and examined by him. He 
thought the quartz-felsite of Orton resembled the rock of High 
Sharpley in Charnwood in its general characteristics ; and it further 
agreed with it in presenting a strong cleavage at a high angle. It 
had also some resemblance to the Pre-Cambrian quartz-felsites of 
North Wales. He thought the quartz-felspar grits, which, unlike 
the Torridon Sandstone, had a calcite matrix, proved the proximity 
of a granitoid axis. 
The Avruor said the older rocks had a dip of from 45° to 50°, but 
the direction could not be made out. He had admitted in the paper 
the possibility of concealed coal-basins existing in the country to the 
southward. 
