GLOSSARY. 55 



FuuTciilus (L. a little cord). A term applied to the small 

 bundles of nerve fibres of which nerves are composed. A 

 short cord which connects the embryo of some Myriapoda 

 with the temporary cuticula or amnion. In Botany, the 

 cord which connects the hilum of the ovule to the 

 placenta. 



Fur'culmn (L. furca, a fork). The V-shaped bone in birds, 

 formed by the union of the clavicles. 



G. 



Galacto'phorous ducts (Gr. gala, milk; pJwreo, I bear). The 



ducts of the mammary gland which terminate in the nipple. 

 G&'lea (Gr. gale, a cat ; a helmet so named, because formerly 



made of cats' skins). The anterior outer process of the 



second joint of the maxilla in the cockroach. 

 Galeopithe'ci (Gr. gale, a cat; pithecos, an ape). A group of 



the Insectivora. 

 Galli'nse (L. gallina, a hen). According to the old system of 



classification, an order of birds which included the fowls, 



&c. 

 Gamogen'esis (Gr. games, marriage; genesis, origin). Sexual 



reproduction. 

 Gan'glion (Gr. a swelling or hard knot). A small mass or 



knot of nerve tissue, made up of both nerve fibres and 



ganglionic corpuscles. Also applied to an encysted 



tumour occurring on a tendon, or aponeurosis, generally 



on the back of the hand or foot. 

 Gan'glion im'par (Gr. and L. ganglion without a fellow). The 



lowest ganglion of the sympathetic chain. 

 Gan'glion stella'tum (Gr. and L. star-shaped ganglion). A 



large ganglion in the anterior wall of the mantle in the 



Cephalopoda. 

 Ga'noid (Gr. ganos, splendour). A term applied to fish-scales 



which are composed of an inner layer of bone and an 



outer layer of shining enamel. 

 Ganoi'dei (Gr. ganos, splendour; eidos, shape). An order of 



fishes formerly very important, but now represented only 



by seven genera. 

 Gastero'poda (Gr. gaster, the belly ; pous, podos, a foot). A 



division of the Odontophora, so called because of the 



ventral position of the locomotive organ. 



