CIM 
the entrance, to draw in and devour what- 
ever insects may come near or fall into it. 
These insects are remarkable for the celerity 
and vigour of their flight : they are gene- 
rally seen on the wing in the hottest part 
of the day, chiefly frequenting dry meadows, 
&c. C. campestris, one of the most com- 
mon European species, is a highly beautiful 
insect, being of a bright grass green, with 
the wing-shells each marked by five small, 
round, white spots ; the head, thorax, and 
limbs are of a rich gilded cast, and the eyes 
black and prominent ; the legs are long and 
slender: it is common in the fields, and is 
about half an inch long. 
CICUTA, in botany, a genus of the Pen- 
tandria Digynia ckss and order. Natural 
order of Umbellatae. Essential character : 
fruit subovate, furrowed. There are three 
species, of which C. virosa, long-leaved 
water hemlock, generally grows near the 
sides of large stagnant waters, or in shal- 
low slow rivers. Towards the end of au- 
tumn, the root for the succeeding summer 
is formed out of the lower part of tlie 
stalk : this is divided transversely into many 
large unequal cells ; so that it becomes spe- 
cifically fighter than water, and in winter, 
when the rivers or pools swell, is buoyed up. 
It is an inhabitant of the northern parts of 
Europe, and is one of the rankest of vege- 
table poisons. 
CIENEUEGIA, in botany, a genus of 
the Monadelphia Dodecandria class and or- 
der. Calyx double, the outer of 12 seta- 
ceous leaves ; petals five ; style filiform ; 
stigma clavate ; capsule three-celled, three 
seeds. A single species, found in Senegal. 
CIMEX, in natural history, the bug-, a 
genus of insects of the order Hemiptera. 
Snout inflected; antennae longer than the 
thorax; wings four, folded crosswise; the 
upper ones coriaceous on the upper part ; 
back flat; thorax margined; legs formed 
for running. Of this genus more than a 
thousand species have been enumerated 
and described. The divisions are, 1. A. an- 
tennae inserted before the eyes : which is 
subdivided into, a. without a lip : 6. lip long, 
subulate, annulate : c. lip short, rounded ; 
body long, linear : d. sheath four-jointed, 
the first membranaceous; body long and 
narrow. B. Antennae inserted above the 
eyes. Of this very extensive genus only 
the C. lectuarius, or common bed bug, is 
apterous, or without wings. It is said not 
to have been known in England before the 
year 1670, when it was imported among 
timber used in rebuilding the city of Lon- 
CIN 
don after the great fire in 1666. The bug 
is one of the best subjects for exhibiting a 
microscopic view of the circulation of the 
blood. See Bug. 
CIMICIFUGA, m botany, a genus of the 
Polyandria Tetragynia class and order. 
Natural order of Miiltisiliquae. Papavera- 
cea3, Jussieu. Essential character: calyx 
four or five-leaved ; nectary four, nrce'olate ; 
capsule four to seven. There is but one 
species ; viz. C. foetida, a native of the dis- 
tant parts of Siberia ; flowering in July, and 
ripening its seed in August. The whole 
plant has a strong virose smell, occasioning 
the head-ach. 
CIMOLITE, in mineralogy, is of a light 
greyish white, incUning to pearl-grey; but 
by exposure to the air it acquires a reddish 
tint. It occurs in mass, forming large stra- 
ta; its fracture is earthy, uneven, and its 
texture more or less slaty. It is opake, of 
a greasy lustre, and may be sci aped with a 
knife. It adheres firmly to the tongue, 
stains the fingers in some degree, and, 
though soft, is very tough, and pulverized 
with difficulty. The specific gravity 2.0. 
When exposed to the action of the blow- 
pipe, it becomes at first of a dark grey 
colour ; but afterwai-ds recovers its white- 
ness with little or no alteration : witli borax 
it forms a light brown glass. Its component 
parts are 
Silex 63.00 
Alumina 23.00 
Oxide of iron 1.25 
Water 12.00 
99.25 
It abounds in the i.sland of Cimola, and 
was in great request by the ancients for its 
detergent properties ; at present its use is 
almost entirely confined to tlie inhabitants 
of the island. It produces the same effects 
as fuller’s earth, but in a higher degree. 
CINCHONA, in botany, so named in 
honour of the Countess del Cinchon, lady 
of a Spanish viceroy, whose cure is said 
first to have brought the Peruvian bark in- 
to reputation, a genus of the Pentandria 
Monogynia class and order. Natural order 
of Contortte. Rubiaceae, Jussieu. There 
are nine species. See Bark. 
CINCHONIN, in chemistry: it has 
been supposed that a principle, analogous 
to animal gelatin exists in some vegetables, 
particularly in the Peruvian bark ; this has 
been denominated cinchonin. In this prin- 
ciple it has been supposed that the febri- 
