TABLE OF CONTENTS. 



CHAPTER IX. 

 AERONAUTIC OR BALLOONING HABIT. 



PAGES 



Flying Spiders — Velocity of Flight — Attitude of the Aeronautic Spider — Frolicsome Spi- 

 derlings — In the Air — Controlling the Descent — The Height of Ascents — Floating 

 Gossamer — Aeronautic Orbweavers — Flossy Balloons — Modes of Ballooning— Aerial 

 Navigation — The Huntsman Spider — Around the World by the Trade Winds — Spi- 

 ders at Sea — Distribution of Species— Gossamer Showers — Their Origin — Dr. Jona- 

 than Edwards — His boyish Studies of Spider Life — Professor Silliman's Tribute . 2-5U-282 



PART IV.— SENSES OF SPIDERS AND THEIR RELATIONS 



TO HABIT. 



CHAPTER X. 



THE SENSES OF SPIDERS, AND THEIR ORGANS. 



Spider's Eyes — Ocellus— Structure of Eye.s — Orbs made in the Dark — Cocooning in the 

 Dark— Sighting Prey — Night Habits — Color of Eyes — Night Eyes and Day Eyes — 

 Atrophy of Eyes — Cave Fauna — Sensitive to Light— Limited Vision — Good Sight in 

 Saltigrades— Lubbock's Experiments — Eye Turrets— Eye Tubercles — Sen.se of Smell — 

 The Peckhams' Experiments — Olfactory Organs — Sense of Hearing— Organs of Hear- 

 ing — Effects of Sound — A Disgusted Spider— Communication by Touch — Sensitive- 

 ness to Music — Attracted by a Lute — The Violin — ^Beethoven and the Spider — A 

 Natural Explanation -Auditory Hairs — Wagner's Studies — Are Spiders Mute? — A 

 Male Love Call — Stridulating Crustaceans — Scorpions— Westring's Discoveries — Strid- 

 ulating Theridioids— How Sounds are Made — -Mygale stridulans — Uses of Stridula- 

 tion— Mute Mygale— How Tarantula Strikes 283-322 



CHAPTER XL 



COLOR AND THE COLOR SENSE. 



Facts of Spider Colors — Beautiful Spiders — Attoid Jewels — Metallic Hues — Colors of the 

 Shamrock Spider — Color Development in Young — Color and Sex — Moulting Influ- 

 ences — Colors of Age — Effects of Muscular Action — Influence of Sex — Color Con- 

 sciousness — Climatic Influences — Influence "of Environment — Mimetic Harmonies- 

 Color of Cave Spiders — Bleached by Sunlight — Color ITtility — Industrial Compensa- 

 tions — Warning Colors — LTnconscious of Danger — Color Consciousness — Color Sense 

 of Spiders — Spiders prefer Red — Mimicry and Colors — Cocoon Colors — Prevailing 

 Spider Colors— Color of Silk— Metallic Hues— Color Scales 323-351 



PART v.— HOSTILE AGENTS: THEIR INFLUENCE. 



CHAPTER XII. 



MIMICRY IN SPIDERS. 



Industrial Blimicry — Cutting Ants — ^Mimetic Trapdoors — Self Protection — Trapdoor 

 Architecture — Moggridge and his Trapdoor Spiders — Tree Trapfloors — Form Mimi- 

 cry of Animals — Ant like Spiders — Value of slight Variation — Darwin's Theorj- — 

 Sight of Birds — Birds eating Ants — English Game Birds at Linton I'ark — The 



