Chapter VII: The Frog--Notes on Management 140

LIST OF ENGRAVINGS.

Cabinet Aquarium _Frontispiece._

Tank containing Vallisneria Spiralis, Anacharis,
Gold Carp, Roach, and Minnow _Page_ 11

Vase Aquarium 15

Callitriche 22

Stratoides Aloides 24

Vallisneria Spiralis 25

Myriophyllum Spicatum 27

Potamogeton Densus 28

Ranunculus Aquatalis 30

Hydrocaris Morsus Ranæ 31

Tank containing Gudgeon, Prussian Carp, Loach, and Bream 33

Tank containing Minnow, Tench, and Perch 41

Tank containing Planorbis Corneus, Paludina Vivipara,
Lymnea Stagnalis, Unio Pictorum, Tumidus, and Anodon
Cygneus 45

Cleansing Sponge 50

Actinia Mesembryanthemum, Dictyota Dychotoma 64

Porcellana Platycheles, and Cancer Pagurus 72

Carcinas Mænas 73

Actinia Anguicoma, Trochus Ziziphinus, Ulva Latissima,
Bryopsis Plumosa, Acorn Barnacle 75

Actinia Bellis and Gemmacea, Delesseria Alata,
Polysiphonia Urceolata 76

Actinia Dianthus, Delesseria Sanguinea, Callithamnium
Roseum, Griffithsia Setacea 82

Edwardsia Vestita, Æsop Prawn, Enteromorpha Compressa,
Ulva Latissima 86

Dipping Tube 96

Syphon 99

Hand Net 107

Diving Spiders and Nests 112

Transformation of the Dragon Fly 120

Virgin and Green Dragon Flies 122

Larva of the Gnat 124

Larva of Stratiomys 125

Larvæ and Imago of Case Fly 128

Grating of Case Worm, Magnified 129

Dytiscus and Larva, Reduced 132

Hydrous Piceus 134

Colymbetes 135

Gyrinus Natator 137

Gyrinus, Magnified 138

Water Scorpion 142

Transformations of the Tadpole 144, 145

Pocket Lens 147