4 Field Notes. 



through the sparsely populated wold district, and perhaps at a 

 season when the farm crops were growing fast, and affording 

 cover. 



This is the same animal that was discussed at the meeting 

 of the Vertebrate Section of the Union at Leeds, on October 

 23rd, and there described as a ' large escaped Ferret ' But, 

 anyone familiar with the Pine Marten should have no difficulty 

 in recognising a specimen, whose superior size, larger ears, 

 longer legs, and longer and more bushy tail sufficiently dis- 

 tinguish it from the Polecat, or from the latter's domesticated 

 form, the Ferret. 



GEOLOGY. 



Glacial Erratics at Scarborough. — ^During excavations 

 in the Boulder Clay forming part of the Cliff of the South 

 Bay, at Scarborough, made in connection with a building 

 for entertainments, no fewer than nine large Shap Granite 

 Boulders, and four of Carboniferous Limestone, were excavated. 

 The largest three of the Shap Granite Boulders measure 14 ft. 

 7 ins., 12 ft. 4 ins., and g ft. 3 ins. in girth, respectively, 

 and from 2 ft. 11 ins. to 3 ft. in height. — D. W. Bevan, 

 Scarborough. 



Permian Marls at Ripen. — Drainage excavations, in 

 early 1915, at Ripon South Camp shewed that red and grey 

 marls, with occasional thin limestones, occur close to the 

 surface at about the 150 ft. contour, and 200-300 yards west 

 of the Harrogate Road. Southward towards the Magnesian 

 Limestone quarry at Quarry Moor (rather less than a quarter 

 of a mile away) boulder clays intervene, so that the junction 

 of the marls and the massive limestone was not seen, but 

 presumably the marls are of either Upper Permian or Triassic 

 age. — W. S. Bisat, North Ferriby. 



Schizodus (obscurus or truncatus ?) near Doncaster. — 



A small Schizodus is well known from the shell bed at the 

 summit of the Upper Magnesian Limestone. At a quarry 

 on the Doncaster-Tickhill road, one mile south of Wilsick 

 (close to Narrow Lane), it occurs in fair numbers at this 

 horizon, in loose blocks in the subsoil at the north-west 

 corner of the quarry. The peculiarity about it in this exposure 

 is that all the specimens are preserved with the two valves 

 outspread, and that quantities of what is presumably an algal 

 growth cover the bedding planes at the same horizon. The 

 algal growth is known elsewhere in the Upper Magnesian 

 Limestone, but not in such quantities as occur at this quarry. 

 Specimens are in the Doncaster Museum. — W. S. Bisat, 

 North Ferriby. 



Naturalist 



