| XI. NOTES ON SCULPTURE |
| Some practical hints |
| Notes on the casting of the Sforza monument |
| Models for the horse of the Sforza monument |
| Occasional references to the Sforza monument |
| The project of the Trivulzio monument |
| The mint of Rome |
| On the coining of medals |
| On plaster |
| On bronze casting generally |
| INTRODUCTORY OBSERVATIONS ON THE ARCHITECTURAL DESIGNS AND WRITING ON ARCHITECTURE |
| XII. ARCHITECTURAL DESIGNS |
| I. Plans for towns |
| II. Plans for canals and streets in a town |
| III. Castles and villas |
| A. Castles |
| B. Projects for palaces. |
| C. Plans for small castles or villas |
| IV. Ecclesiastical Architecture |
| A. General observations |
| B. The theory of constructing Domes |
| 1. Churches formed on the plan of a Greek cross |
| Group I. Domes rising from a circular base |
| Group II. Domes rising from a square base |
| Group III. Domes rising from a square base and four pillars |
| Group IV. Domes rising above an octagonal base |
| Group V. Suggested by S. Lorenzo at Milan |
| 2. Churches formed on the plan of a Latin cross |
| A. Studies after existing monuments |
| B. Designs or Studies |
| C. Studies for a form of church most proper for preaching |
| D. Design for a mausoleum |
| E. Studies for the Central tower or Tiburio of Milan Cathedral |
| F. The Project for lifting of an unknown temple |
| V. Palace architecture |
| VI. Studies of architectural details |
| THEORETICAL WRITINGS ON ARCHITECTURE |
| I. On Fissures in walls |
| II. On Fissures in niches |
| III. On the nature of the arch |
| IV. "On Foundations, the nature of the ground and supports" |
| V. On the resistance of beams |
| REMARKS ON THE STYLE OF LEONARDO'S ARCHITECTURE |
| XIV. "ANATOMY, ZOOLOGY AND PHYSIOLOGY" |
| I. ANATOMY: |
| A general introduction |
| Plans and suggestions for the arrangement of materials |
| Plans for the representation of muscles by drawings |
| On corpulency and leanness |
| The divisions of the head |
| Physiological problems |
| II. ZOOLOGY AND COMPARATIVE ANATOMY: |
| The divisions of the animal kingdom |
| Miscellaneous notes on the study of Zoology |
| Comparative study of the structure of bones and of the action of muscles |
| III. PHYSIOLOGY: |
| Comparative study of the organs of sense in men and animals |
| Advantages in the structure of the eye in certain an |
| Remarks on the organs of speech |
| On the conditions of sight |
| The seat of the common sense |
| On the origin of the soul |
| On the relations of the soul to the organs of sense |
| On involuntary muscular action |
| Miscellaneous physiological observations |
| The laws of nutrition and the support of life |
| On the circulation of the blood |
| Some notes on medicine |
| XV. ASTRONOMY |
| I. THE EARTH AS A PLANET: |
| The earth's place in the universe |
| The fundamental laws of the solar system |
| How to prove that the earth is a planet |
| The principles of astronomical perspective |
| On the luminosity of the earth in the universal space |
| II. THE SUN: |
| The question of the true and of the apparent size of the sun |
| Of the nature of sunlight |
| Considerations as to the size of the sun |
| III. THE MOON: |
| On the luminosity of the moon |
| Explanation of the lumen cinereum of the moon |
| On the spots in the moon |
| On the moon's halo |
| On instruments for observing the moon |
| IV. THE STARS: |
| On the light of the stars |
| Observations on the stars |
| On the history of astronomy |
| Of time and its divisions |
| XVI. PHYSICAL GEOGRAPHY |
| INTRODUCTION |
| Schemes for the arrangement of the materials |
| General introduction |
| I. OF THE NATURE OF WATER: |
| The arrangement of Book I |
| Definitions |
| Of the surface of the water in relation to the globe |
| Of the proportion of the mass of water to that of the earth |
| The theory of Plato |
| That the flow of rivers proves the slope of the land |
| Theory of the elevation of water within the mountains |
| The relative height of the surface of the sea to that of the land |
| II. ON THE OCEAN: |
| Refutation of Pliny's theory as to the saltness of the sea |
| The characteristics of sea water |
| On the formation of gulfs |
| On the encroachments of the sea on the land and vice versa |
| The ebb and flow of the tide |
| III. SUBTERRANEAN WATER COURSES: |
| Theory of the circulation of the waters |
| Observations in support of the hypothesis |
| IV. OF RIVERS: |
| On the way in which the sources of rivers are fed |
| The tide in estuaries |
| On the alterations cause in the courses of rivers by their confluence |
| Whirl |
| On the alterations in the channels of rivers |
| The origin of sand in rivers |
| V. ON MOUNTAINS: |
| The formation of mountains |
| &nb |
| Reflections on Nature |
| XX. HUMOROUS WRITINGS |
| I. STUDIES ON THE LIFE AND HABITS OF ANIMALS |
| II. FABLES: |
| Fables on animals |
| Fables on lifeless objects |
| Fables on plants |
| III. JESTS AND TALES |
| IV. PROPHECIES |
| V. DRAUGHTS AND SCHEMES FOR THE HUMOROUS WRITINGS: |
| Schemes for Fables &c. |
| Schemes for Prophecies |
| Irony |
| Tricks |
| XXI. LETTERS. PERSONAL RECORDS. DATED NOTES |
| Draughts of letters and reports referring to Armenia |
| Notes about adventures abroad |
| Draughts of letters to Lodovico il Moro |
| Draught of letter to a Commission at Piacenza |
| Letter to the Cardinal Ippolito d'Este |
| Draught of letter to the French Governor of Milan |
| Draughts of letters to the Superintendent of canals and to Melzi |
| Draughts of letter to Giuliano de' Medici |
| Draught of a letter written at Rome |
| A fanciful letter |
| Miscellaneous draughts of letters and personal records (1355 to 1368) |
| Notes bearing dates |
| XXII. MISCELLANEOUS NOTES |
| Memoranda before the year 1500 |
| Memoranda after the year 1500 |
| Memoranda of unknown dates |
| Notes on pupils and artisans |
| Quotations and notes on books and authors |
| Inventories and Accounts |
| Notes in unknown handwriting among the Manuscripts |
| Leonardo's will |
| REFERENCE TABLE TO THE NUMERICAL ORDER OF THE CHAPTERS |
| APPENDIX |
| History of the Manuscripts |
| Bibliography |