O F S T O N E S. 87 



an inch to two indies in diameter, both of an oblong, flattifh, 

 roundifli, and mammillatcd fhape, but moft ufually roundifli, 

 like a pebble ; of a fine texure ; of all the degrees of red, from 

 a deep blood colour to that of a light florid red. We have a variety 

 of it with veins of a pale red, and others with white veins, 

 lighter and darker, like thofe of agates, difpofed in irregular 

 concentric circles, or in fmall and very beautiful round ones. 

 We have alfo a variety of it with an admixture of a pearl- 

 colour, the red appearing difFufed in the form of clouds. It is 

 very much ufed and valued with us for feals, taking a good po- 

 lifh, and parting eafily from the wax.. 



We have the yellow carnelian from lefs than half an inch, to 

 near three inches in diameter, both of a flat and roundifli form, 

 like a pebble ; but moft commonly roundifh, and of a pretty 

 fmooth furface ; of an exceeding fine texture, fomewhat more 

 pellucid than the red;, and capable of a high polifh. We have 

 it of all the degrees of yellow, from the pale lemon to a deep yel- 

 low ; fometimes uniform throughout, but oftner with clouds of 

 red, forming a beautiful flame-colour. We have a variety of it 

 with veins, paler and deeper, and fometimes whitiih, difpofed 

 in irregular concentric lines or circles. 



We have the white carnelian, from an inch to three or four 

 inches in diameter, both of a roundifli, flatdfh, and oblong 

 fhape, commonly of an irregular and rough furface. It is not 

 of a pure clear white, but a pearl-colour, white, with a tinge 

 of blue. We have a variety of it on the fliore of the Coquet, with 

 parallel lines or veins, bluifli and white, very beautiful. We 

 have alfo a variety of it with an admixture of blue, difiufed in 

 fpots and clouds, with irregular concentric veins, and with zones 

 or circles, bluifh and white. I found one of thefe in an iflet in 



the 



