ON THE NATIVE SULPHURETS OF IRON. 275 



of one line in diameter, it fell and broke to pieces. I col- 

 lected the fragments, and feparated the metallic thread by a 

 (light blow. The oxide differed in no refpecl from the fcales, 

 which are feparated from iron when forged. 



I placed eight ounces of this oxide in a porcelain crucible 

 inclofed in one of the faggers below. I was not ignorant that 

 nothing more is neceffary, than the fall of a fingle nail to de- 

 itroy a whole pile. The following was the refult : we found 

 the crucible and the fagger perforated ; the iron reduced 

 and well fufed had bedded itfelf in the floor of the furnace. 

 We could not feparate it but by blows of the chiflel. It was Obfervations and 

 not brittle. Did this iron melt merely by the intenfity of the Series, 

 fire, or did it oxigenate fome charcoal, or decompofe the 

 calcareous part of the pottery, &c. It would I think be an 

 interefting objeel to afcertain this. I kept this iron for a long 

 time, and do not at prefent know what is become of it. I 

 was not furficiently aware at the time how much the theory 

 of chemiftry might be interefted in its examination. It is 

 much to be defired that the experiment mould be repeated 4 



Concerning Wax. 

 I think I may announce to you, that wax exifts in the green Wax in the 

 fecula ; I had before found it in that of opium, and expect to S reen £ ecuIa of 

 find it ready formed in the fecundating powder. I (hall at 

 fome future opportunity treat it in the fame manner as the 

 fecula. 



VII. 



General Obfervations on the Canfes which influence the Weather 

 in England, and t/te popular Methods of judging of the Weather. 

 By James Capper, Efq, formerly Colonel and Comptroller 

 General of the Army and Fortification Accounts on the Coafi of 

 Coromandel*. 



Tj 



HOSE who are furnifhed with proper inftruments, and philofophical ln- 

 who carefully obferve the information they afford, will not ftruments are of 

 often be miftaken in their judgment of the changes of the fudging of" the* 



weather j 

 * From his " Obfervations on the Winds and Monfoons" '4to, 



London, 1801. 



T 2 weather. 



