GLOSSARY. 393 
Imbricated, lapping over each other like the tiles of a house. 
Inarticulate, without joints. 
Incrassated, thickened in any part. 
Incurved, bent inwards. 
Inflected, bent inwards. 
Inosculation, the union of two vessels at their extremities. 
Integument, a natural covering of the body, as the skin. 
Interstice, the space between elevations and depressions. 
Invertebrate, destitute of a backbone. 
Involute, rolled inwards. 
Iridescent, having colours like the rainbow. 
Junctwre, a joint or articulation. 
Labial, pertaining to the lip. : 
Lamellated, divided into layers or plates. 
Lanceolate, tapering to a point like a lance. 
Larynx, the upper part of the windpipe. 
Latticed, in open squares like net-work. 
Lobed, having lobes or broad finger-like divisions. 
Innated, in the shape of a crescent. 
Mammillated, having little globes hke nipples. 
Mesial or Medial, placed in the middle. 
Mucronate, ending in a mucro or sharp rigid point. 
Muricated, rough with points. 
Nascent, beginning to exist. 
