Untitled

Fig.		Page
188 .	An embryo of Jungermannia (Kienitz-Gerloff)	404
190 .	Development of the sporangium of Osmunda (Bower)	406
191 .	Embryos of Phascum and of Adiantum (Kienitz-Gerloff)	408
192 .	A section of Girardia (Goebel)	408
193 .	An antheridium of Pteris (Strasburger)	409
194 .	Spicules of Siphonogorgia and Anthogorgia (Studer)	413
195 ã7.	Calcospherites, deposited in white of egg (Harting)	421, 2
198 .	Sections of the shell of Mya (Carpenter)	422
199 .	Concretions, or spicules, artificially deposited in cartilage (Harting)	423
200 .	Further illustrations of alcyonarian spicules: Eunicea (Studer)	424
201 ã3.	Associated, aggregated and composite calôÙcoôÙspheôÙrites (Harting)	425, 6
204 .	Hartingãs ãconostatsã	427
205 .	Liesegangãs rings (Leduc)	428
206 .	Relay-crystals of common salt (Bowman)	429
207 .	Wheel-like crystals in a colloid medium ( do. )	429
208 .	A concentrically striated calcospherite or spherocrystal (Harting)	432
209 .	Otoliths of plaice, shewing ãage-ringsã (Wallace)	432
210 .	Spicules, or calôÙcoôÙspheôÙrites, of Astrosclera (Lister)	436
211 .ã2.	C- and S-shaped spicules of sponges and holothurians (Sollas and Thûˋel)	442
213 .	An amphidisc of Hyalonema	442
214 ã7.	Spicules of calcareous, tetractinellid and hexactinellid sponges, and of various holothurians (Haeckel, Schultze, Sollas and Thûˋel)	445ã452
218 .	Diagram of a solid body confined by surface-energy to a liquid boundary-film	460
219 .	Astrorhiza limicola and arenaria (Brady)	464
220 .	A nuclear ã reticulum plasmatique ã (Carnoy)	468
221 .	A spherical radiolarian, Aulonia hexagona (Haeckel)	469
222 .	Actinomma arcadophorum ( do. )	469
223 .	Ethmosphaera conosiphonia ( do. )	470
224 .	Portions of shells of Cenosphaera favosa and vesparia ( do. )	470
225 .	Aulastrum triceros ( do. )	471