GLOSSARY. 463 



CHEMICAL, anything relating to Chemistry that science which 

 determines the constituents of bodies, and the laws which 

 regulate their combinations. 



CHRY'SALIS, the second or pupa state of an insect. Some species 

 exhibit at this time brilliant metallic tints; hence the origin 

 of the term, from Gr. chrysos, gold. Chrysalids is used as 

 an English noun in the plural number, to denote more than 



one chrysalis. 

 CILIA, minute hair-like organs, which in the infusoria and 



polyps become important organs for locomotion, and for the 



capture of food by means of the currents caused by their 



vibration. Lat. cilia, eye-lashes. 

 CILIOERACIIIA'TA, an order of polyps, in which the tentacula or 



arms, surrounding the mouth, are covered with cilia. Lat. 



cilium, an eye-lash, brachia, the arms. 

 CILIOGRADE, a group of rayed animals, like the Beroe, in which 



the cilia become the organs of locomotion. Lat. cilium, an 



eye-lash, gradior, I advance. 

 CIRRI, the filaments attached to the jaws of certain fishes. 



Lat. cirrus, a tendril or curl. 

 CIRRI'PEDA, an order of articulated animals, comprising the 



Barnacles and Acorn-shells. Lat. cirrus, a curl, and pes, a 



foot. 

 COCOON, the case or covering formed by an insect prior to its 



change into the perfect state. 

 COLEOP'TERA, an order of insects. It comprises the various 



tribes of Beetles, many of which have membranous wings 



concealed under the wing-covers or elytra. Hence the origin 



of the -term, Jcoleos, a sheath, and pteron, a wing. 

 COMMINUTED, broken or ground down into small parts. Lat. 



comminuere, to crumble into small pieces. 

 COMPLICATED, involved or formed of many parts. 

 CONCHOLOGY, the department of science which treats of shells. 



Gr. kogche (pronounced conche), a shell, and logos, a dis- 

 course! 

 CONCRETE, particles united or coagulated into one body. 



Lat. concrescere, to coalesce into one mass. 

 CONCENTRIC, having one common centre. 

 C ONGE ALED, hardened or frozen into ice. Lat. congelare, to freeze. 

 CONGENER, one of the same genus, but of a different species. 

 CONGLOMERATE, OR PUDDINGSTONE, a rock composed of water- 

 worn fragments of rocks and shells cemented together. Lat. 

 conglomerare, to heap together into a ball. 

 CONTRACTILE, having the power of drawing itself into small 



dimensions. Lat. con, together, traho, I draw. 

 CONVOLUTED, Lat. convolutus, rolled together. 

 CORIACEOUS, resembling leather. Lat. coriaceus, leathern. 

 CORNEA, the anterior transparent part of the globe of the eye. 

 COROLLA, the blossom or coloured petals of a flower. Lat. 



corolla, a little crown. 

 CORUSCATION, a flash or sudden glearn of light. Lat. coruscare, 



to flash, to twinkle. 



