KNOWLEDGE 



INDEX OF ILLUSTRATIONS, 



Algol-Stars— 



Diagriiins ilhistniting Variaticins of 

 Liglit of ,. :irt 



Alligators- 

 Skulls of 207 



Ammonite 



Shell of ir,4 



Argus — 



Photosrai'li of till' 1/ Argus Region 

 of tlu- Milkv Way Hi' 



Atmosphere— 



J)iagraiu illustrating Tloight of ,, 213 



Balloon — 



riiofograplis taken from 212 



Bones of tlie Kore-limb of the Bat 12!) 



Bee- 

 Sting, Poison-glanil, Heart, and 

 Salivary glands of Honey-bee . 91 



Book-louse — 



Head, Mandible, Wings, and Body 

 of '. 6 



Burnham — 



Orbits of Double Stars 48 



Calendar- 

 Perpetual Calendars IS, 70, 75 



Cluster — 



ttf Stars round o Vulpeeuhe So 



Coal Sack — 



Photograph of the Coal Sack 

 Eegion of the Milky Way 112 



Cricket— 



ilandible and Mouth Organs of 83 



Wing and Auditory Organ in Tibia 

 of . . ' 84 



Crocodile — 



Skidls of 20(i. 203 



Cygnus— 



Photographs of Regions rounil a, e, 

 and ^ Cygni 188, ISii, 231, 232 



Dark Structures — 



In Milkv Wav 



Filaria — 



Filaria sanguinis liomiuis ,.. 

 Flying Fish- 

 Flying inseet and Pterodactvle 



Ganoid — 



An Extinct franoid Fish 



Gnat-^ 



TAOK 

 144 

 114 



inn 



Photographs of the Larva and 



Pupa of 122 



Figures of spirarular Horn. &c. 142, Hi i 



Grampus — 



The Common Gramjius .. 152 



Greenland — 



Pii'tures from Dr. Hansen's ■• First 



Crossing of (ire.-nland" 2 



Honeycomb — 



Brood Comb and Royal Cells 89 



Ichthyosaurus — 



Skeleton of 167 



Lick Observatory 



Photograph of, taken after Snoiv- 



Metacarpels — 



Of Extin.'t I'ngulate Animal 



Milky Way- 

 Diagram illustrating Mi-. Proctor 

 Spiral Theory of 



Photographs of the 



The Human Far 



230, 231, 232 

 . 25 



Moa - 



lioiies of Leg of Giant Moa ... 44 



Mosquitos — 



Figures illustrating Life-History 

 of Gnats, ilidges and Mostpiitos 



122. 142 



Mosses 



Pictures of Hvpnum Polvtrichum, 



&e. ' . 221,222 



Mushroom — 



Diagram showing Mveclinm Gills, 



&c. ' ' 204 



Nebecula — 



Photographs of the \ebecula. 



Major and Minor 50 



Earwigs — 



Forceps and other parts of 



181. 182. 201. 203 



Echinoderm — 



Pictures of Fossil and Alodern Sea- 



I'rchins 23(i. 237 



Electric Discharges - 



Photograiihic traces left b\ 32 



Fein- 

 Transverse Section of Leaf, and 

 rructification of Leaf and Spor- 

 nnginiii (il 



Numulite — 



Wcv; and Section of 



fi4 



Orchid — 



Diagraiinuatic view of Orchis 



.Maeulata 149,151 



Photograph of Cattley a Mossije , . . 150 



Orion — 



Photograph of .Nebula and Stars in .50 



Ovule — 



Diagrams and Sections of ... ... 03 



Pediculi — 



Female Head Louse 227 



Proboscis of Body •use,, 228 



Pelican — 



Webbed Foot of ]fi7 



Perch— 



The Coiniuon Perch 1(!5 



Photosphere — 



Photographs of (he Sun's Photo- 

 sphere by Dr. Janssen .,, 10 



Pitcher Plants — 



.Modified Leaves and Tendrils of ... 8, 9 

 Epidermis and Digestive Surface of 

 Glands and Pitcher .. 10,11 



Pleiades — 



I'hotograph of the Pleiades Nebula, 

 by Mr. Isaac Roberts 92 



Potato Blight- 

 Pictures illustrating gniulli of 



Fungus . . 13() 



Rameses II. — 



Photograph of Stone Figure of ... 69 



Rudimentary- 

 Rudimentary Hiuil Limb of Whale 24 



Sagittarius — 



Photograph of Rich Region in 50. 232 

 Diagram sho\ying Stars ])hoto- 



graphed in ... 94 



Salamander - 



Teeth and .law of Primeval S. 3 



Skull of Giant Primeval S. 4 



Sea Urchin — 



Picture's of Fo.ssil Kclnnoids 236, 237 



Seal— 



Dr. Hansen's Party shooting 



liladder-nosed S.mI-' I 



The Common Seal , , l.s5 



Silver Fish — 



Lalirum, Mandible, Scale, and 

 whole Body of Silver Fish insect 36 



Spherical Shell- 

 Diagram illustrating attraction of 134 



Stellar Spectra- 

 Photographs and Drawings of ... 169 



Sun Spots 



Diagram illustrating Development 

 of Spots ill various Heliograpluc 

 Latitudes 14 



Temple- 

 Photograph of Intaglio, represent- 

 ing front of an Egyptian Temjile 09 



Variable Stars — 



Diagrams showing distribution of 



Short Period Variable Stars .. 194 



Wheat Rust- 

 Rust or MihlcH 



Hydroid Zoophyl,' 



108 

 176 



