, Ofngular BoSes of . .■ 
1R O Ni as many as hitherto £s af£^‘ 
I have met with, may bp re- < . 
duced to three forts j of which the firfi 
plaiii,and being fomewhat thick in the 
middle, by little and little grows thinr 
nectovvards the extremes^ where is ends 
fliarp all abdilt. The fecohd is inelu • 
dcd in ttvdve plains 5 and the in 
t^entj four:. Out of the lecond ibrt be¬ 
comes fdmetimes an Angalar Body made 
tip of fix plains, refembling two Trila¬ 
teral Pyramids, fo jdyn’d by the bafe to 
one another, that Angles of one bafe 
do biieff the fides of the other bale. 
The Second and Third fort of . An * 
gtilar Bodies of Iron do agree with Ghry- 
ftalsj.:i ' . ,■ - ... ^ 
I . As to the Place of Pr.odu£iion 5 fee¬ 
ing that the place, where Iron grovvs, is 
partly folidv partly.fluid, and is the hoi- 
lovVnels of a Stone; 
3.. As to the plaCe which the matter 
is, joyned unto; for as much as in: Iron 
alfo.the matter is joyned not to all, but 
to fome certain plains, and to thcfe not 
always all over,: nor always at the fame 
timCj \)ut now to ohe> then to another, 
F fome- 
