TABLE OF CONTENTS OF VOLUME I. 
PART IL—STRUCTURE AND SPINNING ORGANS. 
CHAPTER I, 
GENERAL CLASSIFICATION AND STRUCTURE. 
PAGES 
The Origin of the Name Spider—Principal Groups, Sedentary and Wandering—Tribal 
Divisions—Blackwall’s Classification—Thorell and Bertkau—Highest Forms—Superi- 
ority of Lycosids—Orbweayers and Lineweavers—Anatomy of a Spider—Caput— 
Eyes—Mandibles —Sternum—Labiumn—Maxille and Palps—Legs and Claws—The 
Abdomen—Pulmonary Sac -The Epigynum and Male Organs—Hints to Collector— 
A Spidery—How to Observe Spinningwork and Habits—Preserving Specimens. . 15-33 
CHAPTER II. 
THE SPINNING ORGANS. 
External Spinning Organs—The Spinnerets or Spinning Fingers—The Posterior Spin- 
nerets—Middle Spinnerets—Anterior Spinnerets—Bucholz and Landois’ Studies— 
Studies of Meckel—Spinning Spools—Internal Spinning Organs—Silk Glands—Liquid 
Silk—Pyriform Glands and Ducts—Cylindrical Glands—Treeform Glands—Spinning 
Spools of the Pyriform Glands—Spigot Spools—Spools of Middle and Anterior Spin- 
nerets—Generic Differences in Spinning Spools—The Muscular System for Expelling 
PON ace cr ae Ae eee rye cay A ach insta A ee Mica nae NE ur a a ee ol ~ « 4b 
PART IIL—GENERAL CHARACTERISTICS, CONSTRUCTION, 
AND ARMATURE OF WEBS. 
CHAPTER III. 
GENERAL CHARACTERISTICS OF ORBWEAVERS SNARES, 
Popular Errors—An Orbweb Defined—Great Groups of Orbwebs—Parts of the Orb— 
Forms of the Hub—The Free Zone—Notched Zone .............. 52-59 
CHAPTER IV. 
CONSTRUCTION OF AN ORBWEB. 
Laying Out the Frame—Dragline—The Prime Foundation—Foundations by Air Currents— 
Bridge Lines—Webs Between Trees—Webs on Water Plants—Cobweb Bridges—Trial 
Air Lines—Swinging Inspection Baskets—Jonathan Edwards as an Arachnologist— 
Double Foundation Lines—Placing in Radii—Alternate Apposition of Radii—Form- 
TD SUM RAN OME Uap MGmnmnaees cngrananren eitens, Writ akitamtitt kaise o's yaieled is cates 60-78 
