vi CONTENTS. 
LETTER IV. 
Formation of Pearls—<Artificial method of producing 
them, among the ancient Indians, and modern Chinese 
—Linnezus’s coat of arms—Reference to the Pearl by 
Eastern writers — Hafiz and Aldaramy — Extensive 
trade carried on, in remote ages, with the Orientals 
for Pearls—Channels of communication through which 
they circulated into Europe—Ancient and modern 
Fisheries—Great Fishery of Manaar, in Ceylon— 
Univalves: meaning of the generic appellation of each 
—Moral improvement derivable from Conchology. — - 
LETTER V. 
Subject of Univalves continued—Ancient mode of extract- 
ing the Tyrian Dye— How used in illuminating 
manuscripts. - - - . - - - - 
LETTER VI. 
Modern mode of extracting the Tyrian Dye — The 
trumpet originally suggested by the Buccinum; used 
in Wales, Italy, and Palestine, for blowing signals, and 
calling the cattle from the fields— Poetry. - - - 
LETTER VII. 
Visit to Tenby—Description of the Nautilus and Argo- 
Page 
76 
112 
134 
nauta: admirable construction of each. 5 = - 143 
