Contents
Front Matter
Introduction
I
Arrangement of Evidence
II
Segments of Arthropoda
III
Vertebrae and Ribs
IV
Spinal Nerves
V
Variations in Arthropoda
VI
Chaetopoda, Hirudinea, and Cestoda
VII
Branchial Openings of Chordata and Structures in Connection with Them
VIII
Mammae
IX
Teeth
X
Teeth - Recapitulation
XI
Miscellaneous Examples
XII
Colour Markings
XIII
Minor Symmetries: Digits
XIV
Digits: Recapitulation
XV
Minor Symmetries: Segments in Appendages
XVI
Radial Series
XVII
Radial Series: Echinodermata
XVIII
Bilateral Series
XIX
Further Illustrations of the Relationship Between the Right and Left Sides
XX
Supernumerary Appendages in Secondary Symmetry
XXI
Appendages in Secondary Symmetry
XXII
Duplicity of Appendages in Arthropoda
XXIII
Secondary Symmetry in Vertebrates
XXIV
Double Monsters
XV
Concluding Reflections
Indices