Sycon, a small marine sponge of the sycon type, t.s. through the body
Sycon, near med. long. sec. through body and osculum
Sycon, tangential long. sec.
Sycon, thick t.s. with calcareous spicules in situ
Sycon, spicules isolated, w.m.
Sycon, sec. showing stages of development *
Sycon, l.s. and t.s. on one slide
Grantia, a marine sponge of the sycon type, t.s. through the body
Grantia, near median long. sec. through body and osculum
Grantia, tangential long. sec.
Grantia. t.s. and l.s. on one slide
Grantia, calcareous spicules, isolated and w.m.
Grantia, thick t.s. with calcareous spicules in situ
Spongilla, fresh water sponge, t.s. showing choanocytes, incurrent and excurrent channels
Spongilla, gemmulae (winter bodies) w.m.
Spongilla, siliceous spicules isolated and w.m.
Leucosolenia, a simple marine sponge of the ascon type, stained and w.m.
Leucosolenia, t.s. through the body
Euspongia, a commercial sponge, macerated skeleton shows horny fibres, w.m.
Euspongia, typical t.s. through the body
Sponge spicules, strewn slide of mixed species w.m.
Hydra, extended specimen carefully stained for general body study, w.m. showing all details
Hydra with bud, w.m. *
Hydra with bud, l.s.