MICROSCOPICAL PREPARATIONS. 



17 



B. 



423. Spicules of Spongilla phcmosa (India) 



424. „ Tethea Logani (FossU) 



425. Spongilla lacustris 



426. „ „ spicules B ... 



427. „ „ ovaria B 



428. „ „ dermal membrane B 



429. „ „ longitudinal section 



430. Spicules from Trinidad deposit B... 



431. Spicules of Sponge B ... 



432. Sponge spicules (Algoa Bay) B ... 



433. Sponge spicules B 



Donor. 

 M. C. Cooke. 



J.G.Waller. 



T. Curties. 

 W. Hainworth. 

 F. Kitton. 



20. Protozoa— FoEAMiNiFERA. 



