O F S T O K E S. 83 



and Klein (y)^ refer them to the animal ; reckoning them animal 

 remains, the fpincs of the echinus, or appendages of the fea- 

 Jlars. 



The belemnite being calcined, is faid to produce the fame 

 effects with the celebrated original phofphorus of Bologna (z). 



Spar is found with us in great quantities ; fome white, of 

 an irregular roundifh mape, and mammillated ; the mammilla: 

 of different magnitudes ; others in the form of ificles, white, 

 with purple zones ; alfo of a light ftraw-colour, fmall at the 

 root, fwelling in the middle, and tapering to a point, with final! 

 irregular tubera, and fiftuloiis. I have a fine fpecimen of the 

 mammillated and firlt ificle fort, from the more of the river Co- 

 quet, above Tbropfon; and two of the laft ificle-fpecies from a 

 quarry at Bebfide, by the river Blyik, both of the fame length, 

 five inches. I have had one from the fame quarry above a foot 

 long, of the fame colour, and tubulous. There are at this time 

 many fhort ones under the arch of the bridge at Warfy in Tynedak, 

 mow- whit. 



We have fome fpar with fingle, and fome with compound 

 crufts. I have a fine fpecimen of the latter fort from the ihore 

 of the brook at Simonburn the furface thick fet with irregular 

 tubera, which being rubbed down by politure fliew a beautiful 

 Wavy procefs, with concentric zones or circles, and in one of 



(y) y.Th. KUnil Defcript. Tubulorum marlrioruta, 4to. cum Fig. Gtdanl, 1731. Per- 

 illuftri Ham Shane, Baronetto, infcript. 



(z) Du Fay's Le&ure on the Phofphorus at the Meeting of the Royal Academy of Sciences 

 at Paris, in the Year 1730. 

 Account of feveral new Sorts of Phofpborus, publiflied in the Year 1/33. 



M 3 them, 



