ILLUSTRATIONS. 
PLATE I. LIFE IN THE DEEP SEA. i. Sea- Lily, Pentacrinm 
asteria. 2. Sponge, Etiplectella aspergillum. 3. Coral, Lopho- 
kelia prolifera. 4. Sea-Urchin, Echinus elegans. 5. Basket-fish, 
Asterophyton linkii. 6. Sea-cucumber, Cladodactyla crocca. 7. 
Jelly-fish, Pelagia noctilnca. 8. Pteropod, Clio pyramidata. 
FRONTISPIECE. 
PLATE II. INSECT LIFE. I. Ant-Lion in its pit with whole insect 
shown above. la. Ant-lion flying. 2. Tiger- Beetle, Cicin- 
dela campestris. 3. Bombardier Beetle, Brachinus crepitans. 
4. Burying Beetle, Necrophorus interrtiptus. 5. Cock-tail Beetle, 
Staphylinns olers. 6. Swallow -tailed Butterfly, Papilio Mac- 
haon ........ to face p. 135 
ILLUSTRATIONS IN THE TEXT. 
PAGE 
The Thread-slime, Frotogenes . . ,, , . .16 
The Finger Slime, Protamazba . . . . , . . 18 
Infusoria, Monas, Noctihica, Vorticella 20 
Foraminifera, Miliola, Globigerina> etc. . . ... 23 
Jelly-body of a Miliolite . 24 
Nummulite, showing the chambers 27 
Sun-Slime, Physemathim ... . . , , .29 
The Flint Shells of Radiolarice or Polycistinse . , . . . 30 
A fragment of bath-sponge magnified ..... 34 
A British sponge found at Brighton 37 
A Sponge-egg and the young sponge swimming ... 38 
Development of a young English sponge ..... 39 
Section of a bath-sponge, showing the chambers . . .41 
