368 INDEX-GLOSSARY. 



Colon, 286. 



Colpidium, 72. 



Columba, 344 ; 229-268. 



Columbia, 349. 



Columella, 123, 219. 



Columnse carnese, in the heart Internal projections of the ventricular 



wall, 245. 

 Commissure (commissura, a joining together) (1) In Invertebrates: a 



nerve-band uniting transversely two ganglia of the same name, 119; 



(2) in the Vertebrate brain : bands of connecting fibres ; Anterior c., 



253, 301, 337 ; Posterior c., 210, 252, 301; Middle c., 301. 

 Comparative Animal Morphology and Physiology, Chap, xiii., 310. 

 Condyle A rounded projection, 276; Mandibular, 183; Occipital c., 179, 



232, 238, 272, 322. 



Cones Crystal c., 104; of Retina, 174, 221. 

 Conjugation, in Protozoa The temporary or permanent fusion of two 



individuals, 15, 18, 72, 317. 



Conjunctiva (conjungo, conjunct-, join together), in Vertebrates A trans- 

 parent membrane, covering the front of the eyeball, and connecting 



the eyelids, 222, 256, 305. 

 Connective A nerve cord joining ganglia of different name to each other 



or to the main cord, 66, 81, 119. 

 Continental Islands, 348. 



Contractility, 318 ; Amoeba, 10 ; Vorticella, 16 ; Hydra, 25. 

 Conus Arteriosus, in many Fishes A contractile tubular part of the heart 



succeeding the ventricle, 162. 

 Copulatory Organ, 86, 154. 

 Coral Is., 348. 

 Cornea (corneus, horny), in the eye The transparent area forming the front 



part of the sclerotic, 103, 134, 174, 221. 

 Cornua (1) in Brain, of lateral ventricle, 301 ; (2) of hyoid apparatus, 



see Hyoid apparatus. 

 Corpora quadrigemina, in Mammalia The optic lobes, each being divided 



into natis and testis, 302. 

 Corpus albicans = c. mammillare, q.v. 

 Corpora cavernosa, in Mammalia The two firm cylindrical structures 



supporting the clitoris and penis, 298, 299. 

 Corpus adiposum, 205. 

 Corpus callosum, in Mammalia A band of nerve-fibres uniting the cerebral 



hemispheres, 301, 337. 

 Corpus mammillare, in the Rabbit A small rounded projection situated 



on the base of the brain, just behind the infundibulum, 301. 



