344 Mr. William Phillips on the OxydofTin, 



In Schist — both micaceous, and of other descriptions from St. 

 Agness — in small veins passing in various directions through light- 

 coloured schist from St. Agness — crystallized, on rounded masses of 

 aggregated fragments of schist (grauwacke) from Relistian mine. 



In Chlorite — from Polgooth mine — in compact chlorite with im- 

 bedded crystals of mispickel from Relistian mine — on crystallized 

 chlorite from Huel Unity. 



In Schorl — from Huel Unity, and some mines in St. Just. 



In Carbonate of Lime — very compact and semi-transparent, from 

 Polgooth — with rhomboidal crystals of carbonate of lime from 

 the same place — and with schiefer spar, also from Polgooth. 



In Topaz — with quartz and topazes of a light yellow ; on topaz In 

 mass, as I suspect, in which are imbeded crystals of tin and 

 quartz — with topazes of a greenish cast, imbedded in mica on 

 decomposing granite — with topazes and chlorite, on granite — 

 with white topazes, crystallized phosphate of lime, and silvery 

 mica on granite, from St. Michael's Mount. Fom what districts 

 the other specimens were brought is unknown, but they are from 

 Cornwall. 



In Calcedony — covered by white decomposing calcedony and by blue 

 calcedony ; both from Pendnandrae mine. 



In Fluat of Lime — disseminated through brownish fluor, intimately 

 mixed with chlorite from Pendnandrae — disseminated through 

 a mass of white fluor, transparent and opake, and very fusible, 

 from Huel Unity — with fluor, purple on the surface, quartz and 

 chlorite on schist, from St. Agnes — imbedded in *CJ.ilorophane, 



* The mine called Pcdnandrae is, I believe, the only one in this country, in which 

 chloroj)hane has been found. I obtained this specimen from it in 1S03, which together 

 with another, also in my possession, in which the chlorophane is almost completely 

 imbedded in semi-transparent calcedony, is the only specimen that has been noticed. It is 



