28o Field Note. 



1850) — to the organic remains in the Magnesian Limestone 

 rocks near Doncaster. Sedgwick pointed out their abundance, 

 generally among the lower and more coherent beds, in the 

 escarpments on both sides of the Don, and at Stubbs Hill and 

 Wentbridge Hill. He stated that many casts of Axinus 

 {Schizodiis) obscurus occur at Wentbridge Hill in the lower 

 beds of yellow limestone, and that it is found in a much more 

 perfect form in the lower beds of Stubbs Hill. He mentioned 

 more than once the beautiful small casts of a deeply striated 

 shell, apparently Turbo, which occur in the pisolitic yellow 

 limestone between Marr and Hickleton. Casts of a small 

 smooth shell, apparently of the same genus, are rarely found, 

 he said, in the lower beds of yellow limestone near Conisbrough. 



King refers to the striated turbos as probably Turbo man- 

 cuniensis (p. 206), and to the smooth ones as probably Turbo 

 permianus (p. 206). King also alludes to the abundance of 

 Schizodus obscurus at Stubbs Hill, and states it has been col- 

 lected near Elmsall (p. 190). 



King's other references to the district are in regard to 

 Mytilus squamosus, a specimen of which he figures from Ham- 

 pole (p. 160) ; Bakewellia antiqua from Hampole, Stubbs Hill, 

 and between Marr and Hickleton (pp. 169 and 170) ; Pleuro- 

 phorus costatus from Stubbs Hill (p. 182) ; and DentaUum 

 sorbii, discovered by the late Henry Clifton Sorby, from ' Con- 

 nigsborough, near Doncaster ' (p. 218). All these localities 

 are on the Lower Magnesian Limestone. 



BIRDS. 

 Crossbills at Louth. — Recently, flocks of Crossbills have 

 been seen in the gardens on the east side of Louth. In the • 

 early morning of July 14th,* a flock of about a dozen was seen 

 by Mr. L Robinson, Mount Pleasant, in his garden. He ob- 

 tained two of the birds — both females — one young, the other 

 adult. The next morning he saw a flock of more than a score, 

 and obtained another young female ; he again saw them in 

 the afternoon of the same day. The taxidermist to whom they 

 were taken saved one of the crops for me ; its contents con- 

 sisted entirely of ' Greenfly.' Two of the birds had the lower 

 mandible curved to its left, the other to its right.- — C. S. Carter, 

 Louth, July 17th. 



* A few days later a fine female Crossbill was seen in a garden near 

 Brough, E. Yorks. — Eds. 



Naturalist, 



