492 



Index. 



Weight of aqueous vapour, 344. 



Wells, 259. 



Wentle trap, 20. 



West Shropshire rambles, 344. 



Wheat stems, weakness of, 479. 



Whelk, notes on, 163. 



White cloud illumination for low 



powers, 292. 

 Wild fowl of Cape colony, 253. 

 Willow leaf, or rice grain entities of the 



sun's face, 430. 



Wiltshire nunnery, 356. 

 Wing-shells, 27. 

 Winter of 1768, 127. 

 Wire ornaments, 6. 

 Wood engraving, art of, 234. 

 Woodpeckers, British, 321. 

 Wray's object-glasses, 160. 

 Wren's nests, 415. 



Zoophytes, 85. 



ILLUSTEATIONS. 



ILLUSTRATIONS IN COLOUKS. 



Ancient Jewelry 1 



Hyalonema Sieboldi 81 



Vegetable Sheep 128 



Oak Feeding Silkworms 241 



British Woodpeckers 321 



Cameo of the Emperor Augustus in 

 the Blacas Collection 401 



TINTED PLATES. 



Mangroves 65 



Economic Use of Shells 161 



Biela's Comet 208 



British Graptolites ' 369 



Various Solar Spots 432 



ENGRAVINGS ON WOOD. 



Tellina solidula , 18 



Donax anatinus 18 



Forms of Marine Shells 21 



Mountain of Swatara 37 



Light Spots in Lunar Night... 53 



Hyalonema , 93 



Diagram of Mean Annual Isotherms 



of London 115 



Diagram of Annual Variation of 



Mean Diurnal Temperature at 



Greenwich 123 



Corolla and Achene of Vegetable 



Sheep 134 



Leaf of Vegetable Sheep 135 



Diagram of Light-spots 144 



Vaginicola Aquatic Valvata 206 



Diagrams of Lunar Perspective, 



269, 270, 273, 274 

 Fac-simile of the Figure of Grapto- 



lithus scalaris 284 



Diagram of Barometric Pressure, 



336, 346 



Ingot of Lead from Linley 354 



Spade found in Roman Mine 355 



Roman Candle 355 



Diagram of darkening Shutter .for 



viewing the Sun by projecting on 



a Screen ... 432 



Dr. S pre n gel's Mercurial Exhauster 453 

 Apparatus for Heating Metal and 



Transferring Gas 456 



Eggs of Corixa Mercenaria 468 



Hi.ltlULJ>, PEINTEll, LONDON. 



