VOL. XXV.] PHILOSOPHICAL TRANSACTIONS. Q85 



We met with only two different kinds of river shells. 1 . A periwinkle shell 

 of three wreaths, generally less than the buccinum trium spirar. tit. 24. List, de 

 Cochleis. Fluviatil. Ang. There were a greater number of these buried in the 

 moor than of any of the former kinds. 1. A periwinkle shell of five wreaths, 

 much smaller and more prominent than those of the buccinum longum sex spi- 

 rarum tit. 21. List, de Coch. Fluviat. It is otherwise very like that buccinum 

 in the fashion of its wreaths. It has not yet been described by any author. 

 We find the kind now living in one of the Northamptonshire brooks, called 

 the Ise. 



The moorish ground where these shells were buried, extends from near the 

 top to very near the foot of a small hill. Above the moor, on the top, and at 

 the brow of the hill, is a sandy soil, of a reddish colour. The whole face of 

 the moor is plain and even, conformable to the rest of the hill, not thus moory, 

 of the same declivity with it ; and appears to be in a natural, and undisturbed 

 state, as much so as any of the slades in the neighbouring fields, excepting that 

 three or four trenches have Intely been cut through it. 



It is evident, that these shells were left here at the deluge, when those from 

 sea were also deposited on land, and not buried since by deterrations from the 

 ground above; for then the upper parts of the moor must have been covered 

 with a reddish sand, such as the ground above is mostly composed of; but no- 

 thing like that appears near the shells in this moor. Besides here are dug up 

 several shells that probably never bred here, but were inhabitants of a different 

 soil, particularly the striped snail-shell. For these animals have peculiar soils, 

 and affect particular regions. 



^n Account of a very large Tumour in the fore Part of the Neck, &c. By Dr. 

 James Douglas. N° 305, p. 2214. 



I lately had the opportunity of opening a woman, about 50 years of age, 

 who had a very large tumour, or hard swelling, on the fore part of her neck, 

 occupying all the space between the whole extent of the lower jaw and the upper 

 part of the sternum, with a considerable rising in its middle; latterly its point 

 inclining to the left side, though the largest part of the tumour was on the 

 right. The skin on the apex of this protuberance was thin and shrivelled, of 

 a colour different from the rest, and looked as if the swelling would have broken 

 in that place. The skin was exceedingly thin, having no fat under it: only, in 

 a cavity between two lobes, on its right side, there was a small appearance of 

 some; for the skin being less stretched there, the cells of the membrana adir 

 posa were not quite emptied. The fleshy fibres of the latissimus colli were 



