COKTENTSi ix 
Chap, Page 
54. Pearls ; how tliey are produced, and where 430 
55. How pearls are found 433 
56. The various kinds of pearls 434 
57. Remarkable facts connected with pearls — their nature . . . . 436 
58. Instances of the use of pearls 437 
59. How pearls first came into use at Rome 440 
60. The nature of the murex and the purple 441 
61. The difi'erent kinds of purples 443 
62. How wools are dyed with the juices of the purple 445 
63. When purple was first used at Rome ; when the laticlave vestment 
and the prsetexta were first worn 447 
64. Fabrics called conchyliated 448 
65. The amethyst, the Tyrian, the hysginian, and the crimson tints 449 
66. The pinna, and the pinnotheres . . 450 
67. The sensitiveness of water-animals ; the torpedo, the pastinaca, 
the scolopendra, the glanis, and the ram-fish .451 
68. Bodies which have a third nature, that of the animal and vegetable 
combined — the sea-nettle 453 
69. Sponges ; the various kinds of them, and where they are pro- 
duced : proofs that they are gifted with life by nature . . . . 454 
70. Dog-fish 456 
71. Fishes which are enclosed in a stony shell — sea-animals which 
have no sensation — other animals which live in the mud . . 458 
72. Venomous sea-animals 459 
73. The maladies of fishes 460 
74. The generation of fishes ..461 
75. Fishes which are both oviparous and viviparous 465 
76. Fishes the belly of which opens in spawning, and then closes again 466 
77. Fishes which have a womb ; those which impregnate themselves ib, 
78. The longest lives known amongst fishes . , . , 467 
79. The first person that formed artificial oyster-beds ib. 
80. Who was the first inventor of preserves for other fish 469 
81. Who invented preserves for murenaD : . . ib. 
82. Who invented preserves for sea-snails 470 
83. Land-fishes 471 
84. The mice of the Nile 472 
85. How the fish called the anthias is taken 473 
86. Sea-stars . . . . 474 
87. The marvellous properties of the dactylus 475 
88. The antipathies and sympathies that exist between aquatic animals ib. 
BOOK X. 
THE NATURAL HISTORY OF BIRDS. 
1. The ostrich . , ... 478 
2. The phoenix ..479 
3. The difi'erent kinds of eagles . . 481 
4. The natural characteristics of the eagle 484 
h 
