Abstract

The author dissents from the interpretation of two pit-sections, one on Aldringham Common, the other near Henham Park Farm, given by Mr. Searles Wood in his paper “On the Structure of the Red Crag.” Mr. Fisher admits that the former is at a higher level than the Thorpe Crag-pit, and the latter than the Wangford Crag; but he denies that the loam on Aldringham Common is Chillesford clay, and is doubtful whether even that at Henham Park Farm belongs to that deposit. Granting, however, that the loam in the latter case is really Chillesford clay, the author states that it is probably carried under the Wangford Crag by a northern dip. Thus he considers that neither of these sections contains indisputable evidence of the superposition of the Chillesford clay to the Fluviomarine Crag. He also expresses a doubt of the crag at Bulchamp being a continuation of the Wangford bed, and states that it much more resembles the Mya-bed as seen at Yarn Hill.

P.S. A subsequent examination of the neighbourhood of Norwich in April 1867, led the author to admit the identity of the Mya-bed with the Upper Crag of Mr. Taylor, as seen at Toft Monks and Bramerton; and consequently to abandon such of his published opinions as are inconsistent with that conclusion.