CHROMOPHANE n.
A general name for the several coloring matters, red, green, yellow, etc., present in the inner segments in the cones of the retina, held in solution by fats, and slowly decolorized by light; distinct from the photochemical pigments of the rods of the retina.
CHUB n.
; the cheven. In America the name is applied to various fishes of the same family, of the genera Semotilus, Squalius, Ceratichthys, etc., and locally to several very different fishes, as the tautog, black bass, etc. Chub mackerel (Zoöl.), a species of mackerel (Scomber colias) in some years found in abundance on the At…
CILIA n.
Small, generally microscopic, vibrating appendages lining certain organs, as the air passages of the higher animals, and in the lower animals often covering also the whole or a part of the exterior. They are also found on some vegetable organisms. In the Infusoria, and many larval forms, they are locomotive organs.…