78 OF STONES. 



I had it. It is compofed of fine fpar, and takes a neat polifli. 

 It is of a conoid fhape, and a little incurvated ; three inches and 

 a half round at the thikeft end, two inches at the frnaller, and 

 an inch and a half long; the fmall end holding part of the 

 flonc, of a yellowifli-grey. It is fometimes found double that 

 length, in that quarry, tumid in the middle, and gradually ta- 

 pering at each end. 



On the fliore of South Tyne, near Allerwajh, in a calcarious (lone, 

 I found a group of them, lying horizontally, of a yellowiih. 

 white. 



I have alfo a fine one from the more of the river T-weed, near 

 Cornhlll, found loofe, of a reddifh-white. 



Of this kind, I met with two remarkable varieties ; one of a 

 conoid fhape, with an arbufcular delineation in the center, of a 

 bright white, on an afli-coloured ground j another of a flat 

 form, marked with the capital letters / R in the center, of a 

 bright white, on a deep purple ground ; both flruck out of a 

 calcarious ftone on the more of the brook at Simonburn. 



It is fometimes found in ftone on the fame fliore with white 

 ftriae, on a ground of two different degrees of purple. 



On the fea fliore by Hofs-links, near Belford, and on the fliore 

 near Widdrington, a yellowifli-white mycetetes is frequent in fmall 

 mafles of the marmor juncenm, and other ilones. 



Innumerable quantities of a grey mycetetes are in the clay- 

 banks by the brook of Simonburn. In my fearchcs for them, I 

 have obferved them frequently lying in great order, appearing 

 as if jointed, till I have been undeceived by taking them out, 



and 



