| Description | 1 letter from Trechmann, C. T. at Hudworth Tower, Castle Eden, to Dr. A. Smith Woodward, describing various specimens he is sending to Woodward, including a coprolite from the marl slate of Thickley, as well as fish scales and Bellinurus, described by Dr. H. Woodward as a new species, from the highest coal measure of the Durham coalfields on the Wear at Claxheugh near Sunderland. |