MINERALOGY. 
4t 
Irocatello^ or brocettelato. The figures are chiefly 
regarded in the Paejino di piorenza^ Alberino di 
Monte Gallicano^ &c. &c, When fome of the 
originals are wanted to compleat the whole fet of 
piarbles, they are fobftituted either by others, 
that have the moil refemblance to them, or by 
white marbles ftained or coloured; and this is 
the cafe with the Marmore di fangue di Dragone^ 
To this fpecies of folid limeftone alfo belongs 
the marble from Blankenburg, which is red, 
black, and white; likewife that from the pro- 
vince of Jemtland in Sweden, which is black 
and white, or only black, and the French mar-^ 
bles, viz. Serfontaine^ Antin^ Seracolin^ St, Baume^ 
Servelat^ &c. &:c. which have feveral bright co- 
lours. 
The fineft folid modern marbles are thofe from 
Italy, Blankenburg, France, and Flanders. There 
are alfo marbles dug in Saxony, and other parts 
of Germany, in Norway, and Sweden; but ei- 
ther they are not of fuch agreeable or ftriking 
colours, or elfe are of that fpecies which is call- 
ed the Scaly glittering Limeftone, mentioned 
Se6t. ix. 
There are, however, feveral among the above- 
mentioned marbles, which are partly mixed with 
the fcaly limeftone (Se6t. ix.), though not in 
fuch a quantity as to conftitute the principal part 
of the ftone, but only as a fubftance which has 
joined together lumps of the folid limeftone, or 
elfe filled up its empty crevices or cracks. This 
kind, however, ought not to be reje61:ed, but 
might be ufed as a marble, if only fuch pieces 
were chofen that have the fineft texture : becaufe 
thofe v/ith coarfe fcales, when polifhed, are of an 
icy appearancS, as mafons term it, and do not 
fiiew their true colours, by reafon of the femi- 
tranf- 
