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componere parvis^ a huge pile or flack of cleft v/ood. 
Though I do not mean to eiigrofs this Paper with my 
obfervations on the Auvergne and Veiay bafaltes, which 
I fliall refer to a future occafion, yet I cannot quit the 
fubjedl without adding a few particular remarks, that 
immediately concern the prefent inquiry. Though 
the columnar cryflallization of Monte Rofib is the only 
one I have yet feen, or heard of, in a mafs of granite;, 
yet other groups of columns have occurred to me in, 
other parts, that are equallyof a heterogeneous fubflance 
or texture, though different from thofe of Monte Roffb, 
as well as from the common bafaltes. But I fhall men- 
tion only one inflance, as the mofl pertinent to my pre- 
fent fubje6l, in the bafaltine hill, called Les Rameaux.^, 
near Ifenchaux in Veiay. By their form, furface, in- 
ternal colour and texture, the columns of this hill par- 
take of the charadlers both of the common bafaltine co- 
lumns, and of thofe of Monte B.offo before defcribed. 
They approach nearer to the fub-oval than the circular 
form ; their furface is rough,^ though not knotty ; and 
though they rather incline towards the dark colour, and 
hard uniform fubflance, as ufual ; yet, on breaking feve- 
ral, I found them unequal, both in colour and texture, 
and fometimes interfperfed with irregular pieces or 
patches, as it were, of a heterogeneous hard fubflance, ^ 
Vhich, by its and fmall rhomboidal cryflalliza- 
tions, much refembles a fort of granite I have frequently 
feen. The mafs, on which thefe columns Rand, is of the 
fame mixed charader; and towards the bafe of the hill, 
a granite. 
