Significance of the optic diverticula, [102]
Silurus, [488]
Sinus, longitudinal venous, of Limulus, [176], [312], [451]
Sin"s, rhomboidal of bird, [46]
Skeleton, Ammocœtes, [126], [296], [335]
Skel"ton, Amm"cœtes, branchial, [126], [126]
Skel"ton, Amm"cœtes, basi-cranial, [132]
Skel"ton, Amm"cœtes, muco-cartilaginous, [291], [296], [330], [331]
Skel"ton, aponeurotic, [414]