Examination of a Native Sulphur et of Bismuth. 29 



Admiral) shall consider expedient. And when our said astro- 

 nomer and the Council of our Royal Society and of the Astro- 

 nomical Society shall have been supplied with as many copies 

 as they may desire, to distribute for the benefit of science, the 

 remainder shall be sold at such price as the Lord High Ad- 

 miral shall fix. And our further will and pleasure is, that 

 you do meet annually at our said Observatory on the first 

 Saturday in the month of June, and at such other times as 

 may seem expedient to our Lord, High Admiral (or the Com- 

 missioners for executing the office of Lord High Admiral), and 

 that at such meeting the President of our Royal Society shall 

 take the chair, or in his absence the President of the Astrono- 

 mical Society ; or in the absence of both the said Presidents, 

 that the Fellows and Members present (of whom seven shall 

 form a quorum) shall elect a chairman for the time being 

 among themselves : and that at every such meeting the chair- 

 man shall be empowered to call in and employ one of the 

 assistants in our said Observatory to act as secretary for the 

 time being. And our further will and pleasure is, that as 

 often as any vacancies occur by death or resignation, the same 

 shall be filled up by the President of the Society, in whose 

 list such vacancy may have happened. And our further will 

 and pleasure is, that any President of our said Royal Society, 

 or any President of the Astronomical Society, who may have 

 become a Visitor to our Royal Observatory, by virtue of his 

 office, shall during our pleasure continue to be a Visitor not- 

 withstanding that he may have vacated the office of President 

 of such Society. And for so doing, this shall be your warrant. 

 And so we bid you farewell. Given at our Court at Saint 

 James's, &c. &c. &c. 



" To our trusty and well-beloved the President of our 

 Royal Society for the time being, the President of 

 the Astronomical Society for the time being, and 

 the other persons hereby appointed Visitors of our 

 Royal Observatory at Greenwich. 



By His Majesty's command, 



" ROBERT PEEL." 



VIII. Examination of a Native Sulphur et of Bismuth. By 

 Mr. R. WARKINGTON*. 



r PHE mineral which forms the subject of the present paper, 



is found in the western parts of Cornwall ; it occupies 



the cavities and fissures of a porous mass of yellow copper 



pyrites and silica, in the form of striated needles and bands. 



* Communicated by the Author. 



It 



