[ 37 ] 
to confirm an opinion, which I have long entertained of?^’ 
the igneous origin of granites in general; fome further- 
proofs of which I fliall hereafter confider. A dingy red 
ochrous earth covers partly the furface of Monte Rofib^, 
from whence probably proceeds the name given to the 
hill ; ro£b^ in Italian, fignifying red. Much iron fand alfo 
abounds here, as it commonly does about other wulcanic 
and granite mountains or trails in general. Among, the 
figured concretions of Monte RofTo, I obferved a fmalL 
open perpendicular bank, at the eaft end of the hill, 
which prefented a group of a very peculiar Rruilure. It 
is formed by an: aggregate of angular bodies, laterally 
ranged together, like balfantine columns; but in a hori- 
zontal direilion, with their tops in front, and prominent, 
as they are reprefented in the figure Thefepromi-- 
ixencies are of a globofe form, and made roughby a num- 
ber of fmall cryfiallizations, of a parallelipepid figure, . 
that are concreted in the mafs, which is of a yellowilh' 
colour, and rathenfriable fort of vulcanic fubRance, in-> • 
fomuch that I could not feparate, or ifolate the bodies fo. 
far as precifelytordetermine their particular form, though 
a.correfpondent continuation of the external angles ap- • 
pears within, and they feem to contrail a little, pyra- 
midically, like the ifolated body .figured^”^, and wliicli 
feems to be fomewhat of the fame kind, but of a much 
harder fubfiance. .This. is alfo from a part of Monte Rofib 
near the prifm^tic columns. Though j as I before faid, 
there are very few of the Euganean hills that intirely- 
Fi^, 2... fsjFig. 3,. 
confiffc : 
