230 Objects for the Microscope. 



Pollen of Hollyhock or Mallow. 



Stamens. 



Sections of Wool, Endogens and Exogens. 



A capsule of Moss. 



Spore-cases of Fern. 



Elaters of Equisetum. 



Elaters of Jungermannia. 



Leaf of Moss or Jungermannia. 



Specimens of Fungi. 



Mould, Arsyria, Phragmidium, or Puccinea, blight of 

 Wheat. 



Heads of Insects. Bee, Wasp, Beetle, Butterfly, Hyme- 

 noptera, Blow-fly, Panorpa, Tipula, to show the tongues and 

 eyes, and study them comparatively. 



Antennae of Syrphus, of Cockchafer. 



Leg of Dytiscus, Gyrinus, a Fly, a Beetle, a Saw-fly. 



Wing of Wasp, for hamuli ; wing of Syrphus, of Hemip- 

 tera, of Moth, to show scales. 



Spiracles of Dytiscus ; Trachea of ditto, or Silkworm ; 

 Aerating leaflets of Libellulae, or Ephemera. 



Sting of Wasp or Bee, of Gnat, of Horse-fly. 



Elytra of Diamond-beetle, of Hemiptera. 



Saws of Saw-fly. 



Egg of Breeze-fly. 



Acarus of Sugar. 



Palate of Whelk and Helix, Limpet, Doris. 



Zoophytes. Sertularia, Laomeda, Notamia, Gemellaria, 

 Cellularia, Flustera, Plumularia. 



Sections of Bone and Teeth. Human bone, reptile bone ; 

 one of fish, of bird, of quadruped. 



Hairs of Animals. Elephant, Mouse, Bat. 



Spicules of a Sponge. 



Spicules of Gorgonia and Holothuria. 



Section of Echinus spine. 



Infusorial Earths, three or four specimens, especially 

 Discs from Guano and jNaviculse. 



Sea- weeds, Callithamnion. 



Ptilota Polysiphonia. 



