KNOWLEDGE 



INDEX OF ILLUSTRATIONS. 



Adder — 



The Common Adder (I'elws Berus) 

 Skull of Adder and Heads with 

 Fanf;s 

 Andromeda — 



Woodcat from Photograph of Great 



Nebula 

 Outline of Bond's Drawing of Nebula 

 Map Showing Position of Nucleus 



and Nova ... 

 Photographic Reproduction of Jlr. 



Isaac Roberts" negative of 

 The same on a larger scale 

 Barometer— 



Self-registeriug of Lick Observatory 

 Basongo Meno — 



Native ilnrket Women 

 Bat— 



The Long-eared Bat (^P/ecotux com- 



mtinis) 

 The Horseshoe Bat (Ffrrum 



e(juinuni') ... 

 The Vampire Bat ( Vam/nrun spec- 

 trum 

 Bear — 



Brown Norwegian Bear, and Teeth 

 of Bear 

 Bee- 

 Front View of the Head of the 



Polish Bee 

 To|) View of Head — with Sections 

 of Tongue — Palpi and Maxilla- 

 Buck-Jumping — 



Mule 



Cockroach — 



The Common Cockroach (Pcrijila- 



neta orientalis) 

 Elytron and Wing of Male Cock- 



loach 

 Cast Skin of 



Eggs of 



Labium and Maxilla of 

 Leg of Cockroach, and Digestive 

 System of . . . 

 Caroline Island — 



Bird's-eye View of ... 

 Coral Reefs — 



Sections of. according to Darwin ... 

 Corona — 



Outline from Prof W. H. Pickering's 



Drawing from his Photograph of 



the Corona of 188G, August 26 ... 



Branching Structures in Coronas of 



1871 and 1886 



Copy of Prof. W. H. Pickering's 

 Photograph of the Corona of 1889, 

 Jan. 1 

 Photograph of Corona of 1889. 



Jan. 1, by Prof. Barnard 

 Drawing by Mrs. M. L. Todd of the 

 same Coi'ona 

 Cygni, T— 



Orbit of T Cygni 

 Dark Flash — 



Photographs of Artificial Flashes 

 Death. Rate- 

 Curve showing Death-Rate for Lon- 

 don and some other Great Towns 

 Detective Cameras — 



In the Form of a Book 

 Disease — 



Curve showing Deaths from Di fferent 

 Diseases in London — with corre- 

 sponding Meteorological Condi- 

 tions 

 Dragon Tree — 



Photograph of Old Dragon Tree, 



Toneriffe ... 

 Young Dragon Tree. Kew ... 

 Draper — 



I lis Self- registering Barometer and 

 Rain-gauge 



Pele's Hair— i-age 



Enlarged Figures of Scoria Cells 

 and Pele's Hair containing .\ir 



Bubbles 1)9 



Pendulum — 



Mr. Inwards's Pendulum and Lord 

 Grimthorpp's Pendulum... ... 85 



Periodicals — 



Diagram showing Age of Principal 

 English Papers and Periodicals... 104 

 Pineal Eye — 



Sections of Pineal Eye of Varanus 

 Gigantens and Halteria Punctata 160 

 Pleiades — 



Lithograph from Photograph of 

 Nebula in the Pleiades, by the 

 Brothers Henry ... .. ... 68 



Polycistlna — 



Group of ... ... ... ... 27 



Rain-gauge — 



Self-registering at Lick Observa- 

 tory ... ... ... ... 59 



Salamander — 



The Spotted GO 



Sand- 

 Pillars of Sand supporting Pebbles 



or Shells 106 



Sand Grouse — 



From a Living Specimen in the 

 Gardens of the Zoological Society 

 London ... ... ... ... 92 



Sawflies — 



Grub, Perfect Insect. Wing of. Body 



and Abdomen 79, 80 



Enlarged view of Saws of Sawfly, 

 Grubs Feeding. Pupa, and 



Eggs ... 119,120 



Scoria — 



Enlarged Figures of Scoria Cells ... 99 

 Sharp, Abraham — 



Facsimile of a Specimen of A. 

 Sharp's Shorthand on the end of 



a letter from Flamsteed HI 



Snake — 



Seizing a Toad by its right hind leg 85 

 Somali — 



Natives. Men and Women ... ... 44 



Spiral Nebulee — 



The Great Andromeda Nebula 109, 207 

 The Spiral Nebula in Ursa Major... 188 

 The Spiral Nebula in Canes Venatici 188 

 Sponge Spicules — 



Group of ... ... ... ... 27 



Stars- 

 Diagram showing Distances of some 

 of the Nearest Stars ... ... 171 



Sun s Motion — 



Diagram Showing Apex of Sun's 



way in the Heavens ... ... 121 



Synclinal Group — 



Of Structure from the Corona of 

 1871 compared with Synclinal 

 Grouping of Structure in Orion 



Nebula 147 



Thermometer — 



Mitchel's Minimum Thei-mometer... 41 

 Tiger-Beetles — 



Cicindela Campestris. Mandible of 



Tiger-Beetle 157 



Labium of Tiger-Beetle ... ... 158 



Wing of Tiger-Beetle, Larva of Tiger- 

 Beetle 180 



Tornadoes — 



Photographs of Destruction caused 



by 217,225, 128 



^lap showing Distrilmtion of, in 

 America ... ... ... ... 227 



Water Flea — 



Daphnia Pules and Parasites ... 223 

 Worms — 



.\natomv and-Early Life-history of 

 Earth-Worm "... 185, 186, 202 



