■r .1 J *"'■ •?)""« of fishes 144 



Turtles and tortoises, classification of. 344 to 348 



Box turtle, T. Carolina 



Gopher turtle, G. Polyphemus 



Wood tortoise, C. insculptus 345 



Muhlenberg's tortoise, C. muhlenbergi 



spotted tortoise, C. gutattus 



Painted tortoise, C. picta 346 



Mud tortoise, K. pennsylvanicum . . . 



Stink-pot, A. odoratus 



Soft-shelled turtle, A. spinifer 



Snapping turtle, C. surpentina 347 



Diamond-backed terrapin, M. centrata 

 Red-bellied terrapin, P. rubriventris . 

 Yellow-bellied terrapin, P. troosti. . . 348 



Leather sea-turtle, D. coriacea 



Logger-head turtle, T. caretta 



Hawk's-bill turtle, E. imbricata 



Green turtle, C. mydas 



Turtle, parasites of the 147, ISO 



Twitters or Itch disease of fishes, and treat- 

 ment 137 



Umbrella plant, cypera* 213 



Undesirable fish globes 35 



Univalve Molluscs, classification of 217, 220 



Utility of plants in the freshwater aquarium. 27 



Urodela or salamanders and newts 337 



Utricularia, for freshwater aquaria 183 



vulgaris, Greater Bladderwort* . . 205 

 minor. Lesser Bladderwort* .... 205 

 bifiora, Two-flowered Bladder- 

 wort* 205 



gibba, Humped Bladderwort. . . . 20b 

 intermedia. Flat-leaved Bladder- 

 wort 205 



clandistina. Hidden-fruited Blad- 

 derwort 205 



purpurea. Purple Bladderwort ... 205 

 subulata. Tiny or Zig-zag Blad- 

 derwort 205 



in the aquarium 205 



allisneria, for freshwater aquaria. .183, 188, 189 



spiralis. Eel or Tape grass* 188 



male and female plants 188 



method of fertilization 188 



spiralis gigantea, a cultivated 



variety 189 



planting in the aquarium 189 



Variations in fins and tails of goldfishes, etc.* 97 



goldfish breeds 41 



Variety in feeding fishes 127 



Vegetable and animal matter in water 175 



Vegetal Parasites and parasitic diseases 161 



Vermes and hydrozoa of freshwater 246 



Vessels for contagiously diseased fishes 132 



Wakin goldfish 11 



Watase, Dr. S., on the origin of the goldfish. 11 

 On the Caudal and anal fins of gold- 

 fishes* 97 



Warm water treatment for diseases of fishes. 143 



Washington grass, etc., C caroliniana* 186 



Water, aquarium 171 



analyses 173 



carbonic acid §as in 178 



chani^ing aquarium water 176 



conditions for aquaria 171 



effecting growth of plants 177 



filling aquaria with out-of-door tank 



water 177 



mineral constituents supplied to 



aquarium 176 



of a balanced aquarium, analysis of. 173 



oxygen in 178 



sort, for aquaria 175 



substances in 172 



turbid, for young fishes 176 



temperatures in the freshwater aquar- 

 ium 30 



in the marine ai^uarium 290 



vegetable and animal matter in 175 



Water-asel, wood-louse^ A, tenax* 122 



Water clover in aquaria 179 



feather or Hottonia 206 



Watercresses, for freshwater aquaria 203 



Roripa palustris. Yellow Watercress. . 203 

 sylvestris, Creeping Watercress 203 

 nasturtium, Fountaincress . . . 203 

 hispida. Bristly Watercress.... 203 



planting in aijuaria 203 



Water hyacinths, for aquaria uses 208 



for goldfish propagation, 211, 213 

 lettuce, for freshwater aquaria. . .208, 212 



lobelias, for pond culture, etc 213 



-mite, H. geographica* 152 



-newts and salamanders 337, 338 



parasites of 150 



poppy, as an aquarium plant. 179, 183, 212 



clover, as an aquarium plant 212 



snowflake, as an aquarium plant 212 



Watershield, Fanwort, Washington grass, etc., 



C. caroliniana* 186 



yam, lace plant or latticeleaf 212 



Whitefish, parasites of 148 



White fungus on spawn and fishes, and treat- 

 ment* 134 



Wild celery, V. spiralis 188 



Willowmoss, Fontinalis, etc.* 200 



Wintering goldfishes 110, 112 



Worms or Annelida of freshwater 246 



Worms and leeches, marine 303 



385 



