INDEX. 



3*5 



PAGE 



Plcuronectes plesus .. .. 224 



Pleurosigma formosum . , .. Il8 



Plocamium plumosum .. .. 144 



Plumatella repens 134 



Polygonum ampbibiuin .. 83 



Polynoe 286 



Pontobdella 286 



Pope-fish 62 



Porpoises 176 



Potamogeton natans .. .. 91 



Prawn 264 



Principles of the aquarium . . 25 



Protopterus annectens .. .. 179 



Protula 286 



Public aquaria 161 



RAIA BATIS 186 



Raia clavata 185 



Raia lintoa 1 86 



Raia maculata 185 



Rainbow wrasse 196 



Raniceps trifurcatus .. .. 227 



Ranunculus aquatilis . . . . 84 



Red mullet .. ..... .. 5 



Relation between plants and 



fish 10 



Removing dust from water . . 35 



Rhina squatina 184 



Rhodymenia palmata .. .. 147 



Rhombus maximus .. .. 224 



Rockwork 41 



Royal Commission of 1865 .. 2, 3 



Rotifers 127 



Rotifer vulgaris 131 



SABELLA 141 



Sabella unispira 285 



Sagartia bellis 293 



Sagartia parasitica . . . . 293 



Sagartia venusta 292 



Sagittaria sagittifolia .. .. j6 



PAGB 



Salaster 283 



Salia vulgaris 224 



Saxicava 243 



Scallop 243 



Scalpallum vulgare .. .. 276 



Scyllium canicula .. .. 173, 182 



Scyllium stellare 183 



Sea-lions ,. 177 



Sea-mat 248 



Sea- water 156 



Sea-weeds 145 



Self-acting air-can 159 



Sepia officinalis 231 



Sepiola Rondeletii .. .. 233 



Sepiostaire 232 



Serpulse 284 



Sertularians 249 



Shrimp, common 264 



Silurus 68 



Sipunculidae ,. 284 



Sloped-back tanks 152 



Small marine tanks .. .. 140 



Small-spotted dog-fish .. .. 173 



Soil of bottom of tanks . . 45 



Southport Aquarium .. 22, 169 



Sparganium ramosum . . . . 93 



Specific gravity beads .. .. 157 



Sphaerium lacustre .. .. 103 



Spider crabs 270 



Spongilla fluviatilis .. 123,306 



Star-fish 282 



Stauroneis 119 



Stephanoceros eichornii .. 129 



Stickleback 59 



"Stock" glass 38 



Stratiotes aloides 85 



Syngnathus acus 218 



Syngnathus anguineus .. .. 220 



Syngnathus oequoreus .. .. 219 



Syngnathus typhle .. .. 218 



Syphon circulation .. .. 153 



