. |.Th3.t io the produdion of them are 
to be confider’d the operations both of 
the permeating and anibient fluid, ‘ ' 
But as to the FigmCt that is various, 
fornfe being comprifed in eight, others in 
bine, others in'eighteen,' and Tome ini 
tvyenty four planes 5 in which laft I have 
|?en that iboft plants wete ftreajtcdjfoihe 
$IjCb Ijnooth '; And though fome of them 
wete angular j yet they had their furfaces 
rathet gibbons than plane. ’ 
‘ The'ttiatter of Marva/itcs 
liTJf&iSi pttW on various figures ; Foi; 
i5:cs. ;• : how It doth incruftate the 
^^rface of ® plane? ‘It other 
times it is condenfed into Bodies of ma- 
hy 'planet? fometimes it fotmeth right, 
angled Parallelepipeds, which the vul-» 
gar cal|s Cj^fi?/ 5 although the equality 
esf all planes be i£en in few. 
Totafinuch as'I have had the oppor¬ 
tunity uf observing many things of the 
Marcafits, bpth as to toe Cubes 
themfekes, and the Places where they 
are foiind» I, fhali only; %eak. of fuch, 
Hovy their prodn^ioh differs from that 
ofCihryftali.,:" 1 - > 
^ I, As to, the. Tiiuf > for* the Cntbe^ 
