INDEX. 



315 



Plum-pudding stone, 47 



Plymouth breakwater, 104 



Polar seas, 171 



Polishing slate, 155 



Polycystinae, 153 



Polypody, 17 



Porcelain clay, 120 ; manufacture, 



120 I 



Prions, 103 



Protozoa, 153 ; food, 156, 201, 228 



Pteropoda, 157 



Pyrites, iron, 30, 194 ; copper, 294, 



308 

 Pyrocistis, 156 



Quartz, 34, 112, 121 

 Queen's tobacco pipe, 301 



Rabbits, 102 



Radiolaria, 153 



Rags, 271, 279 



Rails, Paper, 284 



Railway carriages, dust of, 5 ; 



wheels of, 309 

 Rain, 41, 46, 48 

 Rainy seasons, 50 

 Raven, 237 8 

 Red currant jelly, 306 

 Red fog, 13 ; snow, 10 

 Rhine, 22, 56, 57, 58, 126 

 Rhone, 56, 59 

 Richmond earth, 155 

 Rio Negro, 185 

 Rivers, 48, 49, 106 ; Amazons, 14, 



55, 60, 185, 210 ; Ambernoh, 201 ; 

 Canadian, 54 ; Colorado, 51 ; 

 Danube, 56, 58, 63 ; Elbe, 59 ; 

 Green, 51 ; Hudson, 26 ; La 

 Platte, 54 ; Loire, 125 ; Mora, 54 ; 

 Po, =6 ; Poik, 62 ; Rhine, 22, 



56. 57, 58 ; Rhone, 56, 59 ; Rio 

 Negro, 185 ; St. Lawrence, 63 ; 

 Severn, 60 ; Siberian, 64 ; Tapa- 

 jos, 210 ; Thames, 60 



Roches moiitonne'es, 70 



Rocks, cut by sand, 39 ; of Sahara, 



28 



Rooks, 235 

 Roots, 94, 99 

 Rope, Old, 281 

 Rose-beetle, 213 

 Rotifer, 152 

 Rottenstone, iss 



Rum, 287, 306 



Running water, 41, 44, 47, 48 62 



Rust, 29 



Sahara rocks, 28 



St. Paul's Cathedral, 36 ; rocks, 213, 



230 



St. Vincent, 235 

 Salt, 159, 160, 161 

 Salts in sea, 159, 162 

 Salviati, in 

 Sand-banks, 106 ; -blast, 37, 39 ; 



-dunes, 106 ; -hills, 106 ; -hopper, 



228 ; Ruby, 108 ; uses of, 109 

 Sand-martin, 102 

 Saratoga springs, 33 

 Sardine cases, 271 

 Sargasso, 158 

 Saiiba ants, 102 

 Saucepans, 289 

 Sawdust, 305 6 

 Scarabasus, 223 

 Scarlet cloth, 277 

 Scavengers, Animal, 195 et seq. ; 



vegetable, 164 et seq. 

 Scavenging in the East, 268 

 Scents, 173 



Scrap copper, 271 ; iron, 308 

 Sea, Dust of, 13 ; -eggs, 129 ; fir, 



230 ; reed, 107 ; salt, 159 ; -water, 



124 ; -weeds, 1578, 186 

 Sealing-wax, 156 

 Shale, 115 

 Sharks, 235 



Shell heaps, 262 ; sand, 256 

 Shells, 127 

 Shingle, 40 

 Ship-w T orm, 201 

 Shooting- stars, 7 

 Shower, 41 



Siberia, 9, 64, 258, 259 

 Silica, 34, 148 

 Simple substances, 29 

 Sinai, peninsula, 28 

 Sirocco dust, 13 

 Skaptar, 12 

 Skin-eaters, 219 

 Skins, 286 

 Skua gull, 231 

 Skull-caps, 277 

 Slate, 115 ; cleavage, 116 ; spots, 



116 ; quarries, 117 

 Slates, Green, 117 



