INDEX. 
Abdominaks, 552. 
Aealephte, or Sea Nettles, 197. 
Acanthopterygians, 578. 
Acclimatizing sponges, 110. 
Acejfiialous Molluscs, 319. 
Acetabuliferous CepLalopioils, 445. 
Achatina zebra, 401. 
Actiniaria, 183. 
dianthus, 191. 
iEquerea violacea, 200. 
Agalma rubra, 241. Its graceful appear- 
ance, 241. Its interior, 242. 
Alcyonaria, 121. 
Alcyonaria proper, 146. 
Alcyonium digitatum, 146, 153. 
Alise Shad, 572. 
Alternate generation in the Biphora, 
317. 
Alveolina oblonga, 87. 
Ambulacral appendages, 265. 
Amiba diffluens, 77. 
princeps, 77. 
Ammodytes lancea, 529. 
Anabas, 584. 
Analysis of sea water, 17, 20. 
Anatomy of the Carp, 495. 
Anchovy (Engraulis), 578. 
Ancient trilobite, 446. 
Animalcules, their action, 12. 
Antarctic Ocean, 5. Discoveries, 48, 54. 
Antipathidffi, 150, 151. 
Apiocrinus pcntacrinus, 273. 
Aplysia depilans, shell and animal, 
40S. 
Apoda, 528. 
Apolemia contorta, 243. Parts magni- 
fied, 244. 
Aporous Madrepores, 152. 
Appearance of the sea, 63. 
Aquarium, the, 69. 
Arctic Ocean, 1 1. 
Argonauta, fables concerning it, 460. 
Aristotle’s description, 460. Oppian’s 
description, 461. His mistakes, 461. 
Kumphius, 461. Real history, 463. 
Madame Power’s experiments, 463. 
Locomotive organs, 464. 
Argonauta argo, shell and animal, 462. 
papyracea, animal and shell, 
464. 
Aristotle’s Lantern, 289, 291. 
Ascidians, simple, social, and composite, 
312. 
Ascidia microcosmus, 312. 
• pedunculata, 313. 
Aspergillum vaginiferum, 389. 
Asteracanthion glacialis, 266. 
Asterias, 262. 
aurantiaca, 264. 
rubens, 263. 
Astcrophyton verrucosum, 281. 
Astrea punetifera, 157. 
Atlantic Ocean, 4. 
Atmospheric currents, 33. 
Atolls and Atollons, 168. 
Aurelia aurita, 201. 
Azoic rocks, 64. 
Bacterium terrno, 100. 
I Baffin’s Bay discovered, 48. 
