MUSSELS AND SNAILS. 
The Argonaut. 
Oyster Farming. 
The Ship-worm. 
Scallop. 
167 
Some Fabulous Monsters of the Sea. 
Pearl Fisheries. 
Wampum and Suckanhock. 
Famous Pearls. 
The 
VOCABULARY. 
4Adduc’tor (Lat. ad, to, and duco, 
lead), a word applied to the 
muscles which hold together the 
shells of bivalves. 
An’o don (Gr, «, priv., and-edous, a 
tooth), a genus of fresh-water 
mussels having no hinge-teeth. 
Bi'valve (Lat. 42, two, and vadva, 
a leaf of a door), having two 
shells which open and shut. 
Bran’chia (Gr. éranchia, gills, pl. 
of branchion, a fin), gills. 
Bys’sus (Gr. dyssos, a kind of flax), 
a bunch of tough threads by 
means of which some bivalves 
attach themselves to rocks. 
Car niv’orous (Lat. caro, flesh, 
and vore, to devour), flesh-eat- 
ing. 
Columel'’la (Lat. dim. of colu- 
men, a column), the upright pil- 
lar in the axis of a univalve shell. 
Dex'tral (Lat. «dexter, right), 
right-handed, 
E pider’mis (Gr. ef¢, upon, and 
derma, skin), the outer skin of an 
animal. 
Her biv’o rous (Lat. herda, grass, 
and voro, to devour), vegetable- 
eating. 
Hinge Lig’a ment (Lat. “igo, to 
bind), an elastic substance forc- 
ing open bivalve shells when the 
muscles relax. 
Lin’gual Rib’bon (Lat. dingua, 
tongue), a rasp-like organ used 
in boring holes through shells. 
Man'tle (Lat. manus, hand, and 
tela, aweb), the soft outer cover- 
ing of the body of a mullusk, 
commonly just under the shell. 
Na’‘cre, mother of pearl. 
 soph’a gus (Gr. o7so, will bear 
and phagein, to eat), the tube 
leading from the mouth to the 
stomach, 
O per’culum (Lat. operculum, a 
lid), the lid closing the aperture 
of a snail’s shell. 
Pal’lial Line (Lat. pa//ium, a man- 
tle), the mark on the inside of a 
mollusk-shell made by the man- 
tle. 
Se’te (Lat. pl. of seta, a bristle), 
bristles. 
Sin‘is tral (Lat. s/xzs¢er, left), left- 
handed. 
Si’phon (Gr. siphon, a siphon), a 
tube for passing water through 
the gill-cavity of a mollusk. 
Su’pra @ soph a ge’al (Lat. supra, 
above, and esophagus), an ad- 
jective applied to the ganglion 
above the throat. 
Um bil'icus (Lat.  wmbdtlicus, 
navel), an opening near the cen- 
tre of the base of some spiral 
shells. 
Um'bo (Lat. wmbo, the boss of a 
shield), a prominence near the 
hinge of a bivalve shell. 
Un’io (Lat. wns, one), a genus of 
fresh-water mussels. : 
Whorl, one turn of the spire of a 
univalve shell. 
