XXII. COURTSHIP AND DISPLAY 197 XXIII. COURTSHIP, INSTINCT AND REASON 205 XXIV. DADDY-LONG-LEGS 216 XXV. THE MOTH AND THE CANDLE 226 XXVI. FROM APE TO MAN 236 XXVII. THE SKELETON OF APES AND OF MAN 245 XXVIII. THE BRAIN OF APES AND OF MAN 253 XXIX. THE MIND OF APES AND OF MAN 262 XXX. THE MISSING LINK 275 XXXI. THE SUPPLY OF PURE MILK 292 XXXII. CHRISTMAS TREES AND OTHER PINE TREES 302 XXXIII. THE LYMPH AND THE LYMPHATIC SYSTEM 332 XXXIV. THE BLOOD AND ITS CIRCULATION 342 XXXV. FISH AND FAST DAYS 351 XXXVI. SCIENCE AND THE UNKNOWN 361 XXXVII. DIVINATION AND PALMISTRY 367 XXXVIII. TOADS FOUND LIVING IN STONE 376 XXXIX. THE DIVINING-ROD 383 XL. BIRTH-MARKS AND TELEGONY 396 XLI. HOW TO PROMOTE SCIENTIFIC DISCOVERY BY MONEY 408 INDEX 417 LIST OF ILLUSTRATIONS THE WEYMOUTH ANEMONE, ACTINOLOBA DIANTHUS, AND THE CONTORTED TUBE-WORM SERPULA CONTORTUPLICATA _Frontispiece_ FIG. PAGE 1. A PORTION OF THE BRANCHING TUBULAR GROWTH FORMED BY RHABDOPLEURA NORMANI 5 2. ONE OF THE POLYPS OF RHABDOPLEURA 7 3. A PIECE OF THE WHITE BRANCHING CORAL (LOPHOHELIA PROLIFERA) 9 4. BRITISH MARINE WORMS OR CHÆTOPODS 78 5. THE SHELL OF THE HEART-URCHIN (SPATANGUS PURPUREUS) WITH ITS SPINES RUBBED OFF 80 6. BRITISH SEA-ANEMONES 85 7. A COMMON BRITISH JELLY-FISH 94 8. A COMMON BRITISH JELLY-FISH 96 9. THE LARVAL OR YOUNG FORM OF CRUSTACEA KNOWN AS "THE NAUPLIUS" 105 10. THE COMMON SHIP'S BARNACLE, LEPAS ANATIFERA 109 11. A LARGE BRITISH SEA-ACORN, BALANUS PORCATUS 110 12. TWO STAGES IN THE GROWTH OF THE COMMON BARNACLE FROM THE NAUPLIUS STAGE 112 13. THE PICTURE OF THE "GOOSE TREE," COPIED FROM THE FIRST EDITION OF GERARD'S "HERBAL" 123