ClipArt ETC
"Section through sea anemone. A, B, Directive septa; m.f., mesenteric filaments; g., genital organs; m.l., longitudinal muscles; s., primary septum; s'., secondary septum; s''., tertiary septum. The arrow enters between two primary septa (an intra-septal cavity), and passes out between two tertiary septa." -Thomson, 1916

Sea Anemone

"Section through sea anemone. A, B, Directive septa; m.f., mesenteric filaments; g., genital organs;…

"Transverse section through a zooid of Cladocora. The corallum shaded with dots, the mesogloca represented by a thick line. Thirty-two septa are present, six in the entocoeles of the primary cycle of mesenteries, I; six in the entocoeles of the secondary cycle of mesenteries, II; four in the entocoeles of the tertiary cycle of mesenteries, II, only four pairs of the latter being developed; and sixteen in the entocoeles between the mesenterial pairs. D, D, Directive mesenteries; st, stomodaeum." — The Encyclopedia Britannica, 1910

Cladocora

"Transverse section through a zooid of Cladocora. The corallum shaded with dots, the mesogloca represented…

"Pearly Nautilus. e, eye; h, hood, a muscular portion of the foot which protects the softer parts; s, siphon; se, septa, separating the successive chambers of the shell; sp, siphuncle; t, tentacles." — Galloway

Pearly Nautilus

"Pearly Nautilus. e, eye; h, hood, a muscular portion of the foot which protects the softer parts; s,…

"Fruit of Poppy, cut transversely to show the 12 septa (S) with the seeds." -Whitney, 1911

Poppy Septa

"Fruit of Poppy, cut transversely to show the 12 septa (S) with the seeds." -Whitney, 1911

"Diagram of fruit of Poppy, cut transversely to show the 12 septa (S) with the seeds omitted." -Whitney, 1911

Poppy Septa

"Diagram of fruit of Poppy, cut transversely to show the 12 septa (S) with the seeds omitted." -Whitney,…