I. INTRODUCTORY II. ON MAGNITUDE II. THE RATE OF GROWTH IV. ON THE INTERNAL FORM AND STRUCTURE OF THE CELL V. THE FORMS OF CELLS VI. A NOTE ON ADSORPTION VII. "THE FORMS OF TISSUES, OR CELL-AGGREGATES " VIII. THE SAME (continued) IX. "ON CONCRETIONS, SPICULES, AND SPICULAR SKELETONS" X. A PARENTHETIC NOTE ON GEODETICS XI. THE EQUIANGULAR SPIRAL XII. THE SPIRAL SHELLS OF THE FORAMINIFERA XIII. "THE SHAPES OF HORNS, AND OF TEETH OR TUSKS: WITH A NOTE ON TORSION" XIV. "ON LEAF-ARRANGEMENT, OR PHYLLOTAXIS " XV. "ON THE SHAPES OF EGGS, AND OF CERTAIN OTHER HOLLOW STRUCTURES" XVI. ON FORM AND MECHANICAL EFFICIENCY XVII. "ON THE THEORY OF TRANSFORMATIONS, OR THE COMPARISON OF RELATED FORMS " EPILOGUE INDEX PLATES A Splash of Milk The Latto Phase of a Splash