LONDON AND SUBURBS. 75 



there collected in large quantities and carried to different 

 Vitriol works in England. A great many of these pieces 

 of iron-pyrites, Svafvel-kes-Stycken, are exactly like 

 wood, twigs, &c, so that even the medullary rays, 

 savrandar, in the branches can be seen. These bits of 

 wood have been so impregnated by the sulphurous spirit 

 or vapour that they are now entirely changed into a 

 Svafvel-Kes or lump of iron-pyrites. See Dr. Walle- 

 rius' Miner alogie, p. 340.* 



The lengths of these pieces of iron-pyrites are 6 inches 

 to a foot, as thick as a man's arm, more or less. Oyster 

 shells are also found [T. I. p. 464] in it. But they 

 are mostly unchanged only that they are rusty on the 

 outside. 



The lumps of iron Pyrites or Marcasite, Svafvel- 

 kesar, are not available for boiling Vitriol out of at once, 



Ft. ins. 

 ' ' After that, there comes a fine reddish and thin-streaked 



" mass of shells, masslemast, of clear and clean 



" Stomusslor, to a thickness of 80 



" and are just as if they had been designedly pounded in a 



" mortar, and the Englishmen dwelling in the country 



" round use to burn them to lime after the Dutch manner. 



k After that there follows quite another kind of thing, in all 

 " 28 feet thick, consisting of an endless number of streaks 

 "and horizontal beds, partly of pebbles and sand together, 

 " and partly of a grey sandy clay, partly of a dark kind of 

 " earth, mork jordart, and so on 28 o 



" After that, 3. streaky clay, en randig lera, down to the 

 ' ; base and the water, in all 25 feet high, which is like a 

 '• network of streaky stuff, distinguished by different 

 "colours and streaks, has the outward appearance of a 

 "dark-brown shale, skifverberg, contained in two or 

 '• three horizontal bands, SLl'eck, of 22J feet thickness, and 

 • ; extends right through the hill here and there sticking out 

 "like great flat stones, staen-hallar." Hjarne, p. 340. [J. L.] 



* Wallerius, Johann Gottschalk, Mineralogia, Eller Mineral Riket in- 

 delt och beskrifvit afl. G. W. Stockholm, 1747. 8vo. This was the first 

 of a long series of " Mineralogies.'' Q. L.] 



