184 -Mr. Howard's Experiments and Observations 
of the magnet, appeared to me to compose about eight or nine 
parts, in one hundred, of the weight of the whole mass. I 
observed many pieces of this iron, of a pretty considerable size ; 
one of them, taken from a portion of the stone I had powdered, 
in order to separate the iron, weighed several grains. 
The part of the stone which is in an earthy state, and which 
serves to connect the other parts together, has rather more 
consistence than that of the preceding stones ; and its appearance 
does not differ much from that of decomposed felspar or kaolin. 
The stone itself, therefore, although by no means hard, is rather 
more difficult to break with the fingers. 
The specific gravity of this stone is 3508. 
STONE FROM ITALY. 
This stone was in a perfectly entire state ; consequently, its 
whole surface was covered over with the black crust peculiar to 
all stones of this kind. As the stone was of a very small size, 
it became necessary to sacrifice the whole of it to the investi- 
gation of its nature. Its grain was coarse, similar to that of the 
stones from Benares: in it might be perceived the same gray 
globular bodies, the same kind of martial pyrites, and the same 
particles of iron in the metallic state. The proportion of these 
last was much less than in the stone from Yorkshire; but 
rather greater than in the stones from Benares. The same 
kind of gray earthy substance served to connect the different 
parts together ; and nothing more could be perceived, except 
a few globules, which consisted wholly of black oxide of iron, 
attractable by the magnet, and one single globule of another 
substance, which appeared to differ from all those we have 
already described. This last substance had a perfectly vitreous 
lustre, and was completely transparent: it was of a pale yellow 
