FALLEN ON THfi EARTH. g$3 



This ftone has alfo (owing perhaps to its having remained a 31 *^ * 60 *^*^ 

 much longer time in the earth than the preceding ones, all of 

 which were taken up nearly at the very inftant of their fall) 

 another difference, viz. many of the particles of iron in a 

 metallic ftate, have undergone an oxidizement at their furface ; 

 a circumftance that has produced a great number of fpots, of 

 a yellowifii brown colour, and very near to each other, over a 

 part of its internal fubftance. This oxidizement, by adding to 

 the bulk, and to the force of action, of the part we have de- 

 fcribed as ferving by way of cement to the other conftituent 

 parts of the ftone, has occafioned a greater degree of adhefion 

 between thefe parts, and has rendered the fubftance of the 

 ftone more compact. 



The great quantity of iron in a metallic ftate which this It is harder, ami 

 ftone contains, added to its greater compaclnefs, makes jt ad !?!£ s a fllgh * 

 capable of receiving a flight degree of polifii ; whereas it is im- 

 poffible to give any polifh to the others. When polifhed, the 

 iron becomes very evident, in the polifhed part; appearing in 

 the form of fmall fpecks, almoft clofe to each other, which have 

 the colour and luftre peculiar to that metal ; thefe fpecks are, 

 in general, nearly of an equal fize. 



The black cruft of this ftone is fimilar to that of the 

 others. 



The fpecific gravity of the ftone is 4281. 



It is eafy to perceive, from the foregoing defcription, that Thefe floras are 

 thefe ftones, although they have not the fmalleft analogy n " c in the fmalu 

 with any of the mineral fubftances already known, either of a gous with any " 

 volcanic or any other nature, have a very peculiar and ftriking ot . Jler know « 

 analogy with each other. This circumftance renders them 

 truly worthy to engage the attention of philofophers ; and 

 naturally excites a defire of knowing to what caufes they owq 

 iheir exiftence. 



(To be continued.}, 



X. 4* 



