20 GLOSSARY. 



Canalis membrana'cea (I,, membranous canal). The central 

 canal of the cochlea of the ear. 



Canalis reu'niens (L. the re-uniting canal). The canal by 

 which the sacculus of the internal ear communicates with 

 the membranous canal of the cochlea. 



Cana lis spira'lis modio'li (L. spiral canal of the modiolus). A 

 small canal winding round the modiolus of the ear. 



Can'cellous (L. cancelli, trellis-work). A term applied to the 

 spongy form of bony tissue. 



Ca'nine (L. cams, a dog). A term applied to the teeth next to 

 the incisors, commonly called " eye " teeth, and which are 

 well developed in the dog. 



Can'thus (Gr. kanthos, the corner of the eye). The corner of 

 the eye, formed by the junction of the eyelids. 



Cap'illary, or Capillary (L. capillus, a hair). As an adjec- 

 tive, fine, hair-like. As a substantive; one of the minute 

 thin- walled vessels which unite the arteries and veins, 

 and which are so called because of their hair-like size. 

 Capillary lymphatics are those minute absorbents which 

 form the network in which the lymphatics arise in the 

 tissues. 



Capitulum (L. a little head). Applied to the rounded body 

 at the extremity of the manubrium in the antheridium of 

 Chara, and similar plants. The head of flowers in the 

 Composite. Also a cavity formed by the valves of the 

 shell in the Cirripedia, in which the hinder part of the 

 body is contained. A rounded process of bone. 



Cap'sulae atrabilia'riae (Fr. atrabiliarc y from L. ater, black ; 

 bills, bile). A term applied by the old anatomists to the 

 supra-renal capsules. 



Ca'put cse'cum coli (L. the blind head of the colon). Another 

 name for the ccecum. 



Ca'put cor'nn posterio'ris (L. head of the posterior horn). 

 The enlargement at the back part of the posterior horn 

 of the grey commissure of the spinal cord. 



Ca'put gallina'ginis (L. woodcock's head). The crest of the 

 urethra. 



Ca'rapace (a shield or covering). In the Crustacea, that part of 

 the exoskeleton which covers the cephalo-thorax. In the 

 Chelonia, the dorsal exoskeleton or "shell." 



Carbonic acid gas, ~\ A poisonous gaseous compound of 



Carbonic anhy'dride, > oxygen and carbon, which is largely 



Carbonic dioxide, ) given off by all animals and plants. 



