GLOSSARY. 29 



Colli'culus semina'lis (L. little seminal eminence). The crest 

 of the urethra. 



Colloids (Gr. kolla, glue ; eidos, shape). Substances like glue or 

 gum. Substances which dissolve imperfectly, and which 

 are but little diffusible through membranes. 



Colon (Gr. kolon, a limb, the great gut). The second part of 

 the large intestine. 



Colos'trum (L. colostra, the first milk of a cow after calving). 

 The first milk secreted after the birth of a child. 



Colum'bse (L. columba, a dove). The pigeons ; a group of birds. 



Columella (L. a little column). The projection above the 

 ' collar of the stalk in some moulds, as in mucor mucedo, 

 which projects into the sporangium. Also the name of a 

 bone in the skull of the Lacertilia, which extends from 

 the parietal to the pterygoid bones on each side. Also 

 a core of connective tissue in the central cavity of a 

 Crinoid. 



Columella au'ris (L. little ear column). A small bone, which in 

 birds, most reptiles, and some amphibia represents the 

 ossicula auditus of the middle ear of the higher Vertebrata. 



Columella cochleae (L. little column of the cochlea). The cen- 

 tral pillar or modiolus of the cochlea of the internal ear. 



Colum'nae Berti'ni (L. columns of Bertini). Prolongations of 

 the cortical substance of the kidney, which pass between 

 the pyramids. 



Colum'nae carne'ae (L. fleshy columns). The muscular emi- 

 nences on the wall of the ventricles of the heart. 



Colum'nae rec'ti (L. straight columns, or columns of the rectum). 

 Mucous folds of the rectum. 



Colum'nae ruga/rum (L. columns of the rugae). An elevated 

 ridge extending across the rugae, or fold of the mucous 

 membrane of the vagina. 



Co'ma (Gr. koma, a deep sleep). A state of unconsciousness 

 brought about by morbid causes, such as compression of 

 the brain. 



Co'mes (L. a companion; pi. comites). A term applied to those 

 veins which accompany the arteries. 



Com'missure (L. con, together ; .mitto, I send). A joining. A 

 connecting link between two parts, as the commissures 

 which unite the nerve ganglia in the Invert ebrata. 



Complex'us (L. an embrace, a surrounding). The name given 

 to one of the dorsal muscles of the trunk. 



Cona'rium (L. conus, the fruit of the fir). The pineal gland. 



