Org"ns, genital, of sea-scorpions, [206]

Org"ns, lateral line, [355], [411]

Org"ns, lyriform, of arachnids, [364], [369]

Org"ns, olfactory, of Scorpion group, [220]

Org"ns, phagocytic, [420]

Org"ns, racquet, of Galeodes, [369], [375]

Org"ns, segmental excretory, [389], [391], [408], [418], [459], [477]

Org"ns, sense, of appendages of Limulus, [358]

Org"ns, vestigial, [456]

Org"ns, of vision, evidence of, [68]