III. Stratigraphic and Geographic Distribution of Amphibia in the Coal Measures of North America 9-22 IV. The Morphology of the Coal Measures Amphibia 23-36 V. The Amphibia of the Devonian and Mississippian of North America 37-38 VI. A History of the Classification of the Amphibia, With Especial Reference to the Species from the Coal Measures 39-45 VII. Classification of Amphibia Adopted in This Work, and a List of the Coal Measures Amphibia from North America 46-48 VIII. Definition of the Class Amphibia, the Subclass Euamphibia, and the Order Branchiosauria 49-50 IX. The American Coal Measures Branchiosauridæ 51-66 X. The Order Caudata 67-71 XI. The Order Salientia 72-74 XII. The Subclass Lepospondylia, the Order Microsauria, and the Group Aistopoda 75-77 XIII. The Microsaurian Family Hylonomidæ, from the Coal Measures of Nova Scotia 78-84 XIV. The Microsaurian Family Tuditanidæ, from the Coal Measures of Ohio and Pennsylvania 85-111 XV. The Microsaurian Family Stegopidæ, from the Coal Measures of Ohio 112-114 XVI. The Microsaurian Family Urocordylidæ, from the Coal Measures of Nova Scotia 115-125 XVII. The Microsaurian Family Amphibamidæ, from the Coal Measures of Mazon Creek, Illinois 136-134 XVIII. The Microsaurian Family Nyraniidæ, from the Coal Measures of Ohio 135-138 XIX. The Aistopodous Microsaurian Family Ptyoniidæ, from the Coal Measures of Ohio 139-146 XX. The Microsaurian Family Molgophidæ, from the Coal Measures of Ohio and Mazon Creek, Illinois 147-154 XXI. The Microsaurian Family Sauropleuridæ, from the Coal Measures of Ohio 155-170 XXII. The Microsaurian Family Ichthycanthidæ, from the Coal Measures of Ohio 171-174 XXIII. Supposed Microsaurian Species of Uncertain Relationship 175-177 XXIV. The Temnospondylous Amphibia from the Coal Measures of North America 178-197 XXV. The Stereospondylous Amphibia from the Coal Measures of North America 198-201