C C 



COL 



the characters written with it 

 being invisible when cold, but on 

 exposure to heat assuming a bright 

 green colour, which on cooling 

 they again lose. The principal use 

 of cobalt is to give to glass and 

 porcelain a beautiful blue colour. 



CO'BBLE. ) A pebble. This 



CO'BBLE-STOITE. ) word is given by 

 Kay as belonging to the northern 

 counties. Cobble has the same 

 signification as boulder. 



COCCI'FEROTJS. (from KOKKO-S, a berry, 

 and fero, to bear.) Any plant or 

 tree bearing berries. 



CO'CCOLITE. (from KOKKOS, a grain, and 

 \t0os, a stone, Gr.) A mineral of a 

 green colour, a variety of augite : 

 called also Granular Augite. 



COCCO'STETJS. (from KOKKOS, a berry, 

 and oseoi/, a bone, Gr.) An 

 ichthyolite of the lower old red 

 sandstone. Hugh Miller says, 

 "the figure of the coccosteus I 

 would compare to a boy's kite. 

 There is a rounded head, a tri- 

 angular body, a long tail attached 

 to the apex of the triangle, and 

 arms thin and rounded where they 

 attach to the body. The manner 

 in which the plates are arranged 

 on the head is peculiarly beautiful. 

 There are two marked peculiarities 

 in the jaws of the coccosteus. 

 The teeth, instead of being fixed 

 in sockets, like those of quadrupeds 

 and reptiles, or merely placed on 

 the bone, like those of fish of the 

 common variety, seem to have been 

 cut out of the solid, like the teeth 

 of the saw, or the teeth in the 

 mandibles of the beetle, or in the 

 nippers of the lobster. The posi- 

 tion of the jaws is vertical not 

 horizontal, and yet the creature 

 belonged to the vertebrata. Four 

 species are established. The aver- 

 age length of the coccosteus some- 

 what exceeds a foot. 



CO'CCYGAL. | Pertaining to the coccyx, 



COCCYGE'AL. ) or terminating bones 

 of the spinal column, 



COCCYX. The terminating bones of 

 the spinal column. In the human 

 subject the coccyx consists of four 

 caudal or coccygal vertebrae, which, 

 however, often unite into one 

 undivided portion. In most mam- 

 malia, their number is far greater. 



CO'CHLEATE. | Twisted like a screw, 



CO'CHLEATED. ) or the shell of a 

 snail ; of a screwed or turbinated 

 form. 



CO'CKLE. A term applied by the 

 Cornish miners to either schorl or 

 hornblende. 



Co'cos. Petrifactions resembling nuts 

 of that genus. 



COSLENTERA'TA. A sub-kingdom of 

 the kingdom animalia ; comprising 

 two classes, Actinozoa and Hydro- 

 zoa. 



CCE'LIAC. Relating or pertaining to 

 the abdominal cavity, or belly. 



COLEO'PTEBA. (from KoXeos, a sheath, 

 and Tnepov, Gr. a wing.) An order 

 of insects, having four wings, the 

 two upper being crustaceous, and 

 forming a shield. The second order 

 of the class insecta. This order is 

 divided into five sub-orders, con- 

 taining many families and tribes. 



COLEO'PTEROUS. Belonging to the 

 order Coleoptera ; having a horny 

 hollow case under which the wings 

 are folded. Coleopterous insects 

 have four wings, the two superior 

 resembling horizontal scales, and 

 joining in a straight line along the 

 inner margin; the inferior wings 

 are merely folded transversely, and 

 covered with cases, commonly called 

 elytra. 



CO'LLYRITE. The name of a hydrated 

 silicate of alumina, in which there 

 is one equivalent of silica to two of 

 alumina. 



CO'LOLITE. (from KW\OV, and X/0os, 

 Gr.) The name given to the fossil 

 intestines of fishes by M. Agassiz. 



CO'LON. (KW\OV, Gr. colon, Lat. colon, 

 Fr.) One of the large intestines, 

 and by much the longest. The 



