CAL 
foliated limestone, the granular is the most 
important variety : this is purer than com- 
mon limestone, is found peculiarly beauti- 
ful at Carrava in Italy, where it is quarried, 
and from thence distributed over Europe, 
for the purposes of statuary. The white 
marble of Paros has been long celebrated 
for its fitness for sculpture, and other useful 
purposes. Calc-spar is anotlier variety, ot 
which many of its most beautiful and rare 
crystallizations are^ found in Derbyshire, 
in Ireland, and many parts of the continent. 
The fibrous limestone occurs only in small 
veins : the satin spar of Derbyshire belongs 
to this kind. The calc-sinter is a variety of 
the fibrous limestone, of which there is a 
striking instance in the grotto of Antepa- 
ros : when it occurs in large masses, it is 
used by the statuary for many of the pur- 
poses of marble. The alabaster of the an- 
cients is calc-sinter. It was brought from 
Arabia in considerable quantities, and used 
principally for the drapery of marble sta- 
tues. Peastone is found in great masses in 
the vicinity of the hot springs at Carlsbad 
in Bohemia. Particles of sand appear to 
be raised in the water by means of air- 
bubbles, and become covered with calca- 
reous earth, which is deposited around them 
in lamellar concretions of tlie size of a pea, 
hence the name. 4. Schaum earth, or 
foaming earth,found in the neighbourhood of 
Gera, in the forest of Thuringia; also in 
tlie north of Ireland : it is called by Werner 
Schaumerde, and is thought by him to be 
nearly allied to slate spar, which is another 
species, composed almost entirely of carbo- 
nate of lime. The remaining species we 
pass over as of less interest. 
CALKING, any kind of military draw- 
ing upon paper, &c. It is performed by 
covering the backside of the drawing with 
a black or red colour, and fixing the side 
so covered upon a piece of paper, waxed 
plate, &c. This being done, every line 
in the drawing is to be traced over with a 
point, by which means all the outlines will 
be transferred to the paper or plate, &c. 
CALL, among fowlers, means the noise 
or cry of a bird, especially to its young, or 
its mate in coupling time. 
The call of a bird, says the honourable 
Daines Bairington, is that sound which it is 
able to make when about a month old : it 
is, he says, in most instances, a repetition 
of one and the same note, is retained by 
the bird as long as it lives, and is common,, 
generally, both to. the cock and hen. One 
method of catching partridges, is by the na- 
C AL 
tural call of a hen trained for the purpose,' 
which drawing tlie cocks to her, gives op- 
portunity for entangling them in a net. 
Calls are also a sort of artificial pipes, 
made to catch several sorts of birds, by 
imitating their notes. Different birds re- 
quire different sorts of artificial calls ; but 
they are most of them composed of a pipe 
or reed, with a little leathen bag or purse, 
somewhat in form of a bellows, which, by 
the motion given thereto, yields a noise 
like that of the species of bird to be taken. 
The call for patridges is formed like a 
boat, bored through, and fitted with a 
pipe, or swan’s quill, &c. to be blown with 
the mouth, to make the noise of the cock 
partridge, which is very different from the 
call of the hen. Calls for quails, &c. are 
made of a leathern purse in shape like a 
pear, stuffed with horse hair, and fitted at 
the end with the bone of a cat’s, hare’s, or 
coney’s leg, formed like a flageolet : they 
are played by squeezing the purse in the 
palm of the hand, at the same time striking 
on the flageolet part with the thumb to 
counterfeit thq call of the hen quail. 
Call, in sea-language, a sort of whistle or 
pipe, of silver or brass, used by the boat- 
swain and his mates to summon the sailors to 
their duty, and direct them in their several 
employments. It is sounded to various 
strains, adapted to the different exercises, 
as hoisting, heaving, &c. and the piping of 
it serves the same purposes among sailors, 
as the beat of the drum among soldiers. . 
Call of the house, in a parliamentary 
sense, has been sometimes practised, to 
discover whether there be any in the house 
not returned by the clerk of the crown ; 
but more frequently to discover what mem 
bers are absent without leave of the house, 
or just cause. In the former case, the names 
of the members being called over, every 
person answers to his name, and departs 
out of the house, in the order wherein he is 
called. In the latter, each person stands 
up uncovered, at the mention of his name. 
CALLA, in botany, a genus of the Gy- 
nandria Polyandria class and order. Natural 
order of Piperitae. Aroide®, Jussieu. Es- 
sential character : spathe flat ; spadix co- 
vered with floscules; calyx and petals 
none ; berries many-seeded. There are 
four species, of which C. mthiopica, Ethie- 
pian calla, is a plant which grows naturally 
at the Cape, but has long been an inhabi- 
tant in the English gai dens- 
CALLICARPA, in botany, a genus of 
the Tetraudria Monogynia class and order. 
