Front cover of the limp vellum binding
Inside front cover with fore-edge flap and closure peg
Back cover of the limp vellum binding
Binding unfolded: back cover, spine, and fore-edge flap
Spine of the vellum binding with faded title inscription
Fore-edge of the text block with coloured endband
Binding: Vellum Spine of the Notebook
Binding: Spine and Fore-edge
Binding: Head Edge with Endband
Front Flyleaf with Institut de France Stamp
Blank Front Flyleaf
Front Flyleaf with Pen Trials and Library Stamp
GeometryDividing a line and turning a triangle into a parallelogram
GeometryPerpendiculars, parallels and squares built on a given line
GeometrySquares on a divided line and tangents to a circle
GeometrySquares on a divided line, with worked numerical examples
GeometryRational and medial products on a divided line
GeometryDividing a line: the gnomon and the square of the whole
GeometryBisected line extended: rectangle plus square equals square
GeometrySquares on a line divided into 8 and 4 (Euclid II.7)
GeometryA line extended, and the square on 16 (Euclid II.8)
GeometryProving Pythagoras: the 3-4-5 triangle and squares on the sides
GeometryEqual squares on an isosceles right triangle: a congruence proof
GeometryThe gnomon and Thabit's theorem ('De Tebit')
GeometryProducts as areas: squares, rectangles, gnomons, Pythagoras
GeometryMultiplying lines to form rectangles
GeometryDividing a line and its square into three parts
GeometryFourth: a line of 12 divided into 4 and 8
GeometryLine of 12 split into 8 and 4, with diagonal construction
GeometryCorollary of the fourth: square split into two rectangles
GeometryDividing lines, gnomons and decomposed squares
GeometryLine divisions and figures of the Pythagorean theorem
GeometryRight-angled triangles and the doubling of a square
GeometryPerpendicular from a circle's centre onto a chord
GeometryTwo chords crossing off-centre inside a circle
GeometryIntersecting circles, with the rule of branching trees and waters
GeometryGeometry: Tangent Circles and Groups of Crossing Lines
GeometryCircle Constructions and a Water-Filled Pipe
HydraulicsA Pipe Projecting Water, and Lines Drawn to a Circle
Physics & MechanicsOn Motion and Impact: Descending a Staircase in Leaps
Weapons & FortificationNotes: a Gun-Barrel Test, a Maxim, and a Lasso Puzzle
GeometryQuadrilaterals Inscribed in Circles
GeometryGeometry of angles inscribed in circular segments
GeometryCircular-segment dispute with knot and chain sketches
Physics & MechanicsThe effort of raising versus dragging a load
Optics & LightOn common perspective: apparent thickness and background colour
Optics & LightIrradiation: dark and light objects against contrasting grounds
ArchitecturePencil ground plan of a building with dimensions
Weapons & FortificationPlan of a castle (Milan?) with fortification details
Optics & LightExperiment on the pupil and the apparent size of stars
Weapons & FortificationDetails of fortifications
Machines & DevicesRotating cylinder with perfected pivots
Machines & DevicesScrew-and-wheel gearing driven by a water wheel
Physics & MechanicsQuestions on impact and on a loaded cord
Physics & MechanicsThe centre of gravity and the balance of the water-screw
Physics & MechanicsWhich pivot turns more freely? Angular balances and screws
Machines & DevicesA drill for boring crystal, with screw and balance studies
ArchitectureAngular tower and decorative sketches
Ornament & HeraldryDecorative designs: shields and a fortified building
Ornament & HeraldryDecorative designs: escutcheons, leaves and emblems
Ornament & HeraldryOrnamental shell, cartouche and honeycomb studies
Machines & DevicesNote on the best pinion, and a houseleek-in-flames motto
Machines & DevicesPeg wheel and worm screw; friction of the lantern pinion
Machines & DevicesToothed wheel and lantern pinion: turning and rubbing
Sculpture & CastingEgg-white and glue moulds for casting vessels
Sculpture & CastingSlotted kiln and vessel moulds; Paolo's rule on gears
Machines & DevicesLock for the Duchess's bath; the blow of a rebounding body
HydraulicsPlan of canal lock-basins and a defensive earth embankment
Ornament & HeraldryA vase and related drawings
Machines & DevicesBolt, a counterweight door, and a pivoted rod with pulley
GeometryCircle theorems: chords, secants, tangents and Pythagoras
GeometryCubes on a triangular prism, Pythagoras, and tangent-secant circles
Machines & DevicesLifting mechanism with spring and screw
GeometryTangent and secant of a circle; the Pythagorean theorem
Machines & DevicesLifting mechanism; plan of the Milan castle moats
Machines & DevicesScrew-and-lever hoisting mechanism
Optics & LightOn luminous rays and the power of their extremes
Physics & MechanicsCircle and square; infinite slowness and speed of motion
Personal NotesHeating the duchess's bath water, and a seated man
Optics & LightOptical study with two circles
Optics & LightOptical study: rays converging on a circle (a, a, b)
Machines & DevicesWater wheel and spiral screw pumps
Physics & MechanicsWeights on rotating arms and on pulleys
Physics & MechanicsFriction at a pivot; a water cylinder and a bell balanced
Machines & DevicesOven and Heating Stove
Optics & LightShadows Cast by Sunlight: Tree and Pyramid
Optics & LightShadow of a Pyramid, with a Friction Study
HydraulicsLatin Verb 'To Be' and a Plan to Flood a Castle
Language & LatinLatin Verb Conjugation Table
Machines & DevicesFulling-Mill Shaft and a Prophecy of Lies
Language & LatinLatin declension of the pronoun qui, quae, quod
Physics & MechanicsPendulum and beam: indeterminate figures
GeometryGeometry: circles, squares, Pythagoras and cubes
Physics & MechanicsOn percussion: hammer blows, colliding balls, a wedge
Weapons & FortificationTriangular framework, possibly a fortification detail
Machines & DevicesIndeterminate figures: a wheeled device and a pod
Optics & LightWhy a sphere seen with two eyes never looks perfectly round
Physics & MechanicsBouncing as reflected motion; a wheel divided into sectors
Physics & MechanicsTwo rods: the lifting power of the longer rod
Physics & MechanicsWhere a loaded wheel and rings suffer the most strain
Physics & MechanicsWhy a pivot wears unevenly: the knife-grinder's wheel
HydraulicsSection of a watercourse; a note of a weaver
Arithmetic & ProportionMultiplication sums and an indeterminate figure
LandscapeRapid sketch of a mountainous landscape
CartographyRough sketch-map of the Mediterranean
Machines & DevicesWaterwheel and lantern-gear pinion
Painting & PerspectiveWhy distant mountains turn blue
Machines & DevicesRolling mill for thin tin plate
Personal NotesOpening leaf of Notebook I2 with faded inscriptions
Painting & PerspectiveCloth account, perspective notes, a bee simile and a costume recipe
Language & LatinLatin-Italian vocabulary list (accidit, aliquid, summum)
Language & LatinLatin glossary with land-measure reckonings in pertiche
Language & LatinLatin glossary with a land-cost calculation
Language & LatinLatin glossary and conversion of the trabocco measure
Language & LatinLatin word-list with Italian meanings (fol. 52r)
Language & LatinLatin word-list, small architectural sketch and expense note (fol. 52v)
Language & LatinLatin word-list with a column of names and figures (fol. 53r)
Language & LatinLatin word-list with a dated memorandum (fol. 53v)
Language & LatinLatin word-list of place and direction adverbs (fol. 54r)
Language & LatinLatin word-list of directional adverbs (fol. 54v)
Language & LatinLatin adverbs of place, with an addition sum
Physics & MechanicsElastic lath to launch three arrows; Latin words
ArchitectureRiddle on sleep; plan and elevation of a building
Physics & MechanicsBalanced bell on its pivot; columns and entablature
Machines & DevicesAntifriction roller systems for a lever
Machines & DevicesRule for antifriction rollers; a bell rung by wind
Machines & DevicesSystem of anti-friction rollers for a flywheel
Arithmetic & ProportionLand measure: 96 trabocchi make a pertica
Arithmetic & ProportionTable of land measures: braccia, trabocco, tavola, pertica
Physics & MechanicsOn the proportion of motions, powers and resistances
HydraulicsCross-section of a watercourse bed: tufa, sand and mud
HydraulicsWhy water climbs a mound of earth; deflecting river currents
Physics & MechanicsRicochet of a Stone and a Water Vortex
HydraulicsWhere Three Currents Meet: A Sudden Deep
HydraulicsWaterfall and a River Bed Scoured into a Well
Physics & MechanicsForce of Liquids and Grains in Two Vessels
Fables & ProseProphecies: The Lion Species and Beasts of Darkness
Fables & ProseProphecies: Blood, Plague, Floods and Storms
Fables & ProseProphecies: the babel of tongues and the words of the dead
Fables & ProseProphecies: quills that raise men, dice, and the lantern
Fables & ProseProphecies: threshing, playing-balls, loom-comb, bagpipe
Fables & ProseProphecies: beaten walnuts, crucifixes, parchment, the Host
Fables & ProseProphecies in red chalk: tallow, beasts among the stars, ovens
Fables & ProseProphecies: sold crucifixes, physicians, friars, and lime
Fables & ProseProphecies: Suckling Babies and Sea-Cast Shellfish
HydraulicsWater Around a River Rock: Sand Deposits and Whirlpools
HydraulicsWhy a River Erodes Its Bed and Banks
HydraulicsRebounding Water Mixed with Air; the Wind Circius
Machines & DevicesA River Whirlpool and an Anemometer (Wind-Vane)
HydraulicsWhy Water Leaps Higher Than Its Fall: Air in the Bubbles
HydraulicsRiver Bed and a Cascade Carving the Bank
HydraulicsCascade and the Boiling-Up of Water
HydraulicsA Lexicon of Water's Motions
HydraulicsRiver Features Defined, with a List of Water's Actions
HydraulicsBeginning of the Book of Waters
HydraulicsThe Jet from a Draining Barrel
HydraulicsHow a Cross-Current Breaks a Riverbank and Sorts the Debris
HydraulicsWater Undercutting a Bank into a Cavern
HydraulicsThe Threefold Motion by Which Rising Water Scours a Bank
HydraulicsHow Water Deepens and Scours Where a River Narrows
HydraulicsFloods, Rolling Stones and a Scour Hole at a Florentine Mill
Physics & MechanicsCollision of Discrete and Continuous Quantities
HydraulicsBoiling Upwellings in Rivers; Section of the Elements
HydraulicsWhy Boiling Upwellings Are Intermittent
HydraulicsWhirlpools and How River Water Strikes Different Beds
HydraulicsHow Eddies Form and Consume the Water's Impetus
HydraulicsCollision of Currents of Unequal Size and Speed
HydraulicsThe Great Eddy: How Floating Bodies Move on Water
HydraulicsVortices in a turning current, with clamped and joined rods
Machines & DevicesLatin declensions, with three red-chalk mechanical figures
HydraulicsAir submerged in water and its violent return to the surface
HydraulicsWaterfall and rebound: air carried down among the water's coils
HydraulicsCollision of water masses; a crescent-shaped bed and river bends
HydraulicsCanal bottoms of various forms and the fall of water
Painting & PerspectiveSketches of framed forms with hatched shading
HydraulicsStraightening a slow, winding river
HydraulicsHow floodwater lifts, carries and deposits sediment
HydraulicsHow a river scours and deposits along its bed
HydraulicsCavities scoured in a riverbed (c, n, m, r)
Physics & MechanicsWater leaps and why bombards outrange small guns
Physics & MechanicsDoubled Motion of the Arm in Throwing a Stone
Physics & MechanicsThe Crossbow: When the Arrow Leaves the Cord
Physics & MechanicsWhere a Tethered Falling Ball Strikes Hardest
HydraulicsDo Meeting Water-Waves Penetrate or Rebound?
HydraulicsRipples in Still Water Versus a Moving River
HydraulicsA Programme of Questions on Moving Water
HydraulicsHow to classify every motion and impact of water
HydraulicsOn waves: twelve kinds of waves and eddies
HydraulicsDoes a bend in the race change the force that turns a mill?
HydraulicsWhy a plunging river runs faster on top; a glass tank test
Physics & MechanicsA small drop resting on level and sloping planes
HydraulicsWhy water moves; a drop's weight on level and sloping planes
HydraulicsWater Speeding Through a Narrowed Channel
HydraulicsSprings and Cataracts That Feed the Rivers
Physics & MechanicsWheels Driven by Falling Counterweights
Physics & MechanicsImpact and the Launching of Darts
Physics & MechanicsA Rule for How Materials Break
Physics & MechanicsLeverage in a Mast Pulled by a Cord
Machines & DevicesCounterweights for Doors
Machines & DevicesFigure of a Hinge-Hook (Arpione)
Ornament & HeraldryStamped Metalwork and Interlaced Rings
Ornament & HeraldryOrnamental Designs and a List of Materials
Horses & AnimalsProportion Study of a Dog's Muzzle
Physics & MechanicsRegular Counterweights Compared to Water
Ornament & HeraldrySuspended Decorative Ornament in Red Chalk
Machines & DevicesSliding Rod in Supports, a Male Profile, and Pen Sketches
Physics & MechanicsSpoon Catapult (Cimitrilla) and the Physics of Percussion
ArchitectureArch Construction, Post-Raising, and the Bombard-Rocket Note
Weapons & FortificationMangonel and Crossbow Ballistics; a Glass on a Spinning Hoop
Physics & MechanicsOf Motion: Percussion, the Sling, and the Arm as Lever
Physics & MechanicsOn Motion: Percussion and the Persistence of a Blow
Physics & MechanicsOn Motion: Why the Bombard Alone Increases Its Force
Physics & MechanicsOn Motion: Bows and Crossbows as a Test of Force
Weapons & FortificationThree Ball-Launching Devices: Impetus, Collision, Percussion
Physics & MechanicsThe Rule of Three Applied to a Bombard's Ball
Physics & MechanicsAgainst Infinite Speed from an Ever-Smaller Ball
Physics & MechanicsWeight or percussion: which drives a projectile farther
Machines & DevicesA balance-and-catapult rig for testing throwing power
Physics & MechanicsEqual weights, equal motion; unequal weights ranked by distance
Physics & MechanicsOn motion: heavy bodies sustain their movement; the long-jumper's trick
HydraulicsA waterfall striking, rebounding, and hollowing its bed
HydraulicsCrossing currents and how a river's speed thins its water
HydraulicsSmoke in air, and the currents and percussion of water in rivers
Blank leaf (folio 106 verso)
Painting & PerspectiveFranciscan saints and their attributes, in a rectangular frame
Blank leaf (folio 107 verso)
HydraulicsA jet of water rising after striking an obstacle
HydraulicsWhy the rebound of falling water never equals its descent
HydraulicsRebound of falling water and a glass-walled vessel
HydraulicsAir blown under water; two rivers compared by length
ArchitectureRed-chalk cross-section of a building; gloss on 'furibonda'
Physics & MechanicsProblem: how deep a falling weight sinks into the ground
HydraulicsDividing the power of rivers, and of divided forces
Blank page (folio 111v)
Physics & MechanicsSystem of opposed arches that tension one another
Physics & MechanicsTwo carts pulled in different ways
Physics & MechanicsDegrees of pulling: from dragging to wheeled carts
Physics & MechanicsFriction of pivots versus dragging
Physics & MechanicsAntifriction roller system with multiplied leverage
HydraulicsCollision of two streams of water
HydraulicsExperiments on Water Rebounding in a Level Channel
HydraulicsBouncing Balls and Rebounding Water: Discrete vs Continuous
HydraulicsWave Motion If Water Were a Discrete Quantity
HydraulicsConstriction, Bifurcation and Confluence of a Water Course
HydraulicsRepeated Confluence and Divergence of River Currents
HydraulicsOn the Crest and the Trough of a Wave
HydraulicsWater in Waves: Rising, Falling, and Slowing
ArchitectureSurvey of Streets and Houses; a Drill Mechanism
ArchitectureSurvey Continued: Bridge, Gate and Church Measures
Physics & MechanicsQuestions on Motion; Proportional Ratios
Weapons & FortificationCrossbow Aim by Hand Position; Albert of Saxony on Motion
Physics & MechanicsCurved Motion's Release Point; Dart-Throwing with a Rod
HydraulicsWater Striking an Obstacle; a Counterweight Catapult
Weapons & FortificationCatapult Range: Widening the Arc to Double the Throw
HydraulicsA River Deflected at Its Bank; the Cimitrilla's Throw
Weapons & FortificationWhere Powder Bursts a Bombard; a Note at Table
HydraulicsJets from a Vase; Water Curling Past a Submerged Rock
Language & LatinLatin Word-Lists: Intensives, Superlatives, Comparatives
Language & LatinLatin adverbs: oaths, chance, choice, exhortation, moderation
Language & LatinLatin adverbs and small geometric sketches
Language & LatinLatin adverbs: similarity, quantity, quality, doubt
Language & LatinLatin adverbs: affirming, order, pointing out, questioning, wishing
Language & LatinLatin adverbs: place, number, time, negation
Blank leaf (folio 126v)
FlightFour studies of air vortices striking obstacles
HydraulicsThe rebounding of river water
Physics & MechanicsThe question of the bouncing ball
Weapons & FortificationThe range of a bombard and its trajectory
Weapons & FortificationAiming a bombard by a graduated range scale
Physics & MechanicsThe voice of the echo across distance
Weapons & FortificationBallistics of Bombards: Ball Weight, Powder and Range
Physics & MechanicsOn Motion in General; the Wind on Mountain Slopes
Physics & MechanicsTwo Falling Balls in Channels; a Swaying Carried Beam
Machines & DevicesRed-Chalk Sketch of a Machine, Perhaps a Cloth-Shearer
Machines & DevicesTwo- and Three-Winch Systems and the Balancing of Weights
Weapons & FortificationQuestions on Gunpowder and Bombard Firing
Weapons & FortificationResearch Questions on the Bombard and Its Powder
Weapons & FortificationThe Motion of Cannon Balls: One Heavy Ball or Many?
Weapons & FortificationRecoil, Weather and Bounce: More Gunnery Questions
Language & LatinDeclension of 'uterque' and the Whip of the Arm
Weapons & FortificationTriangular-Mouthed Bombard and Graded Thrown Weights
Arithmetic & ProportionFractions by the Rule of Three, with 'alius' Declined
Language & LatinLatin declensions: plural relative pronoun and 'ullus'
Physics & MechanicsA power moving divided and united weights
Language & LatinLatin model verbs and nouns word-list
Language & LatinLatin declensions: unus, totus, quis and impersonal verbs
Language & LatinLatin syntax: cases governed by active, neuter and deponent verbs
Fables & ProseAllegory of Il Moro with geometry and a prophecy of jackdaws
Fables & ProseA monstrous giant, and prophecies
GeometryLunes of a square in a circle, with a profile head
Blank flyleaf
Blank flyleaf
Binding: inside back cover and flap