THE STRUCTURE AND ACTIVITIES OF A FISH. 
Im’brica ted (Lat. zmdrvex, gutter- 
tile), overlapping. 
Max'illary (Lat. macero, to soft- 
en), pertaining to the jaw; com- 
monly to the upper jaw. 
Mes’entery (Gr. mesos, middle, 
and enxteron, intestine), in verte- 
brates the membrane holding 
the intestines in place. 
Neu’ral (Gr. zeuron, a nerve), per- 
taining to the nerves. In verte- 
brates it is applied to the dorsal 
cavity of the body. 
No tochord (Gr. zotos, back, and 
chordé, a cord), a rod of carti- 
lage from which the vertebral 
column develops in vertebrates. 
 soph’a gus (Gr. o7sd, will carry, 
177 
and phagein, to eat), the tube 
connecting the throat with the 
stomach. 
O per’culum (Lat. operculum, a 
lid), the gill-cover in fishes. 
Pec’toral (Lat. pectus, breast), 
pertaining to the breast. 
Tes’sellated (Lat. Jsessel/atus, 
checkered), formed in squares 
like mosaic. 
Ver'te bra (Lat. verto, to turn), 
one of the sections of the verte- 
bral column. 
Vis’ce ral (Lat. viscera, internal 
organs of the body), pertaining 
to the internal organs; applied 
to the ventral cavity in verte- 
brates. 
