CONTENTS 
Page. 
Introduction by N. S. Shaler 9 
Importance of phosphate of lime in nature 21 
Classification of deposits of phosphate of lime 21 
Mineral phosphates 22 
Apal ites 22 
Apatites of Canada 23 
Apatites of Norway 42 
Apatites of Spain 45 
Phosphorites 46 
Phosphorites of Nassau „ 46 
Phosphorites of southwestern Fiance „ 48 
Phosphorites of Spain 53 
Rock phosphates ,... 59 
Amorphous nodular phosphates 60 
Amorphous nodular phosphates of South Carolina 60 
Amorphous nodular phosphates of North Carolina 70 
Amorphous nodular phosphates of Alabama 75 
Amorphous nodular phosphates of Martha's Vineyard 78 
Amorphous nodular phosphates of Florida J 78 
Amorphous nodular phosphate deposits of North Wales 80 
Amorphous nodular phosphate deposits of England 84 
Phosphate beds of Cretaceous Upper Greensaud 84 
Phosphate beds of Cretaceous Lower Greensand 90 
Tertiary phosphate beds 94 
History of the rock phosphates of England 96 
Phosphates of Belgium 102 
Phosphates of northern France 107 
Phosphates of central France Ill 
Phosphates of Russia » 112 
Phosphatic limestone beds 116 
Phosphatic limestones of Kentucky 116 
Guanos 117 
Soluble guanos 117 
Leached guanos 122 
Bone beds 1-6 
Cave deposits 126 
Lacustrine deposits 127 
Bibliography ." 120 
(479) 5 
