10 slides

1 - Sycon, a small marine sponge of the sycon type, l.s. and t.s. on one slide
2 - Spongilla, fresh-water sponge, t.s.
3 - Euspongia, commercial sponge, t.s.
4 - Sponge spicules of different kinds, mixed species w.m.
5 - Hydra, fresh water polyp, extended and w.m.
6 - Hydra, fresh water polyp t.s. in different levels
7 - Laomedea, w.m. of colony, vegetative and reproductive polyps
8 - Obelia, w.m. of medusa
9 - Aurelia, jellyfish, w.m. of ephyra
10 - Actinia, sea anemone, l.s. and t.s.