Professor Gregory's kindly review of the Carlisle memoir raises once more the vexed question of the structure of the New Red rocks of that district. Two borings, one at Abbey Town and the other at Bowness, prove a thick series of variegated shales in the drift-covered western part of the area. A third boring proved red beds beneath the Lias at Great Orton. As Professor Gregory points out, the correlation of these red beds with the Abbey Town shales is uncertain. Though expressing the same caution, he had nevertheless previously adopted the correlation, his section through Great Orton, here reproduced, showing the beds at the two places as continuous. In what follows it will be easy to distinguish the evidence relating to Great Orton from that dealing specifically with the Abbey Town shales.