GRE 
k mica ; 2, with white li- 
with white, moitly decompofed, 
feldfpar and black mica ; 4, with quartz and black mica 
e argillaceous bafe is moftly grey, fometimes greenith or 
difh ; the mica occurs now and then cryftallized in four 
and fix-fided laminz. oes 
It isin this rock that almoft all the metalliferous veins oc- 
eur in Lower Hungary. In Schenynitz and Kremnitz it is 
mottly of a light green colour, and dry cla ey appearance : 
towards Herrengrund, Neufohl, and the Hodritz, it changes 
its nature, owing to the admixture of a fat greenifh clay, and 
fia conifidera ic rtion of very mica, which imprefles it 
with a flaty character, appreaching to that of gneifs. 
veins traverfe it with great regularity, and are of confider- 
copper ores at lioraxzo in Ty- 
fimilar to the Saxum metallife. 
ungary. 
‘he grains dipar and lithomarge in this rock are 
often feen decompofed and deftroyed, in which cafe the mafs 
fhire, Suckinghamfhire, Kkdy, 
quantities, in fome earlier periods, } 
moved by the inhabitants for building 
Thefe block’ of ftone 
S are fome of them of immenfe 
tox ' 
and were fo, in much greater i 
GRE 
logy ; and rather haftily condemns the explanation-which has 
been offered, to account for thefe huge and uniform loofe 
blocks of ftone, 
ftone (not primitive certainly) which has been wafhed away, 
{trata are found on the chalk ftrata, 
having a bed of thefe ftones in it, 
two feet or more thick 
are feen lying from about 774 
lyina flight y on the north fide of the road, at 774 
miles, where the ftone blocks almoit cover the furface. _ 
GREYHOUND. See Hounpand Dog. 
Greynounps, in Aftronomy. See CANEs venatici. 
. GREYLAG Goose. See Ansrn and Duck. 
_ GREY LEAGUE, in Geography, the moft confiderable, 
in extent as well as population, of the three Grifon leagues. 
_ The etymology of the word Srigia or grey, 
which gives its name to this league, and indeed to the whole 
mely uncertain, Some. conceive that the 
country, were called 
modern inhabitants, by way of allufion to grey hairs, an 
thers imagine, that the firft-au- 
sie m 1424, gave liberty to the 
tion, Tacitus calls the inhabitants of this country ae 
Gri Ammianus Marce i 
but a te 
te Cultrict called the Grey ‘ue firft tool 
arms for the ‘pofe of aflerting their inder dence, the 
naturally ftyled themfelves ei Rigi aes ae 
or the Grey league ; while thole 
| he stormed fimilar affoc 
vee diftinguith themfelves from the frit 
termitory now occupied by the Grey league milange 
as 
