Front Cover of Notebook L
Back Cover of Notebook L
Spine of the Binding
Edge of the Closed Notebook
Edge of the Closed Notebook
Fore-edge with Inked Title
Arithmetic & ProportionOpening leaf: decorated 'L' initial with notes and a calculation
HydraulicsRebounding water jets, an Arno distance, and a list of reminders
Lists & AccountsMemoranda: things to buy, books to fetch, errands, and a debt
Figure StudiesTwo kneeling youths; a note on books and whitening a horse
CartographyPlanimetric survey with lettered stations and pace-distances
Figure StudiesProfile head in an ornate cap, with a small planimetric survey
Figure StudiesArmed warrior kneeling, with two armour details
Figure StudiesKneeling warrior with shield and sword
Weapons & FortificationRecipe for gunpowder, with a small rotating device
FlightKite pulled by cords, and plans of sacred buildings
Ornament & HeraldryDecorative knot designs and a wedge device
ArchitectureDovecote at Urbino: elevation and ground plan
HydraulicsWaves on a sloping shore; plan and a Piombino note
ArchitecturePlan with a drain and a master drain
Weapons & FortificationFortification sketch lettered b b b
ArchitectureDovecote (colombaia) in perspective
Arithmetic & ProportionMultiplication notes: 7 times 7 makes 49
ArchitecturePlan with a five-sided figure and measurements
CartographyMeasured survey line with marginal distance notes
CartographyPerimeter survey with a column-total of 5698
Arithmetic & ProportionMultiplying fractions: a worked check of 3/4 x 2/3
Blank page (folio 11r)
Machines & DevicesAnti-friction rollers: which turns most easily?
Machines & DevicesCircular body seated in a box through the hole n
Blank page (folio 12v)
Blank page (folio 13r)
GeologyRiver silt, the earth's shifting centre, and a vision test
Optics & LightThe pupil, the blowpipe, and a divided quadrilateral
GeometryTriangular figures, a water-filled vessel, and a driven wedge
Machines & DevicesRopes on pulleys, a labelled casing, and rectangular figures
Weapons & FortificationFortress of Cesena and a large building
Physics & MechanicsPulley systems with weights and a beamed roof
Weapons & FortificationEarth-filled fortification walls against artillery
GeologyErosion and the shifting centre of the earth's gravity
HydraulicsPouring vessels and pulley systems
Machines & DevicesDrawing water from a deep well with a short rope
Machines & DevicesExcavator gear: coupling, jibs and swing geometry
HydraulicsTimber cribwork for a water-retaining bastion
ArchitectureThe Siena bell and the stairs of Urbino
ArchitectureRule for the width of a column's plinth
Arithmetic & ProportionCalculations with fractions
Arithmetic & ProportionFraction sums, and a note on drawing hills
Arithmetic & ProportionArithmetic working: columns of figures and fractions
Arithmetic & ProportionRule of three: finding a number from its fractional part
Arithmetic & ProportionRecovering a whole from a fractional part of it
Arithmetic & ProportionMerchant problems solved by the rule of three
Machines & DevicesWater clock, rotating device and ditch-digging schemes
Civil EngineeringOrganising the diggers for a ditch excavation
Civil EngineeringMachines for excavating a moat
Machines & DevicesThe excavating machine: wheel and boom
Machines & DevicesClock mechanism with bell, and a galley pump
Machines & DevicesSpecifications of the excavating machine
Physics & MechanicsFriction on the inclined plane
Machines & DevicesWine press, water clock and a flow vessel
Physics & MechanicsMuscles that Raise the Body in Climbing
Physics & MechanicsWhy a Man Pulls More Downward than Upward
GeometryBeams, Lattice-work and Lettered Broken Lines
Weapons & FortificationPlan of a Fortress with Wall and Ditch Measures
Civil EngineeringOrganising an Earth-Moving Operation
HydraulicsHow a Constricted River Rises and Erodes
Machines & DevicesComposite beam and mechanical device sketches
HydraulicsProtecting the Arno embankment at Rusciano from waves
HydraulicsClashing currents and the hollowed embankment
HydraulicsSediment carried by rivers, and the winding of floodwaters
HydraulicsHow a weir's fall shapes a river's windings
HydraulicsPier struck by water: scour and a protective base
Machines & DevicesThe Bell of Siena in Motion and a Pile-Driver
Machines & DevicesDouble Bellows with Non-Return Valves
Machines & DevicesWindmill Gearing: Toothed Wheel on a Vertical Shaft
Machines & DevicesDetails of Gear and Lever Components
Machines & DevicesTower Windmill with a Rotating Cap
Machines & DevicesWindmill Detail: Cap Resting on the Wheel
HydraulicsRiver meanders, a pulley, and a crenellated building
ArchitectureThree architectural studies: windows and niches
CartographySurvey table: wall lengths and compass bearings
Weapons & FortificationSurvey plan of the walls of Urbino
Weapons & FortificationFortification plans and an inverted water study
Weapons & FortificationPlans of a fortress with survey figures
Weapons & FortificationFortifications: Studies of Defensive Walls
Physics & MechanicsWeights on Pivoted Wheels; Stairs of the Count of Urbino
Physics & MechanicsSpherical Weights on Inclined Planes; a Two-Hammer Bell
Weapons & FortificationProof of the Obliquity of Gun-Embrasures
Optics & LightOn Painting: the Pupil and the Look of Shadow
Physics & MechanicsReflected Motion: the Length and Force of a Rebound
Physics & MechanicsThe Laws of Impact and Reflected Motion
Physics & MechanicsWhy a Polished Cannon-Ball Flies Truer
Physics & MechanicsWhy an Oblique Shot Fails to Pierce a Wall
Physics & MechanicsThe Dents Left by a Ball Striking at Angles
Weapons & FortificationThe Splayed Embrasure Hardest to Storm
Weapons & FortificationComparing Embrasures: Wide Mouth versus Wide Within
Weapons & FortificationGeometry of artillery fire: shots kept within the angle
ArchitectureMilitary architecture and a diagram of artillery fire
Machines & DevicesMechanical device seen at the Cesena fair, and a site plan
Physics & MechanicsA support bending under 4000, and a window from Cesena
Physics & MechanicsWind in a sail, and two equal bodies on an inclined plane
Weapons & FortificationSketches of fortifications
Weapons & FortificationCurved Fortification Walls in Perspective
Physics & MechanicsArgument Against the 'Wheel of Augmentation'
Weapons & FortificationFortification Wall: Elevation and Angle Plans
Weapons & FortificationPlan of a Fortification Gate or Bastion
Weapons & FortificationFortification Wall: Vaulted Casemates and Plan
Weapons & FortificationFortification Gate: Elevation and Plan
Weapons & FortificationMilitary architecture and a study for artillery fire
Weapons & FortificationMilitary architecture: a fortified wall in perspective
Weapons & FortificationFortifications with hay bales
Physics & MechanicsWhy doubling a figure needs more than doubled power
Physics & MechanicsAgainst Vitruvius on small models
FlightHow descending birds control their swoop
FlightWing and tail as the bird's rudders in flight
FlightHow a bird descends and turns in flight
FlightWhy a bird flies faster than the wind that drives it
FlightRighting an overturned bird; the lark's straight ascent
FlightHow the bird's wing beats faster than the wind
FlightFeather resistance and the flexing of a wing surface
FlightAir-Valves for a Mechanical Wing
FlightMechanical Wing: Feather Overlap and Flap Positions
FlightHow a Bird's Spread Tail Brakes and Steers Its Flight
Machines & DevicesA Mechanical Tail-Rudder for a Flying Machine
FlightWing-Beat of Pigeons and Crows; Tail as a Brake
FlightDividing the Flyer's Power for Straight or Circular Flight
FlightNotes on a Feather and on Fortification
FlightSuspended Model Bird for Studying Tail Movements
FlightHow a Kite Steers by Twisting Its Tail
FlightHow the Tail Turns and Steadies a Bird in Flight
Physics & MechanicsWhy a Narrow-Mouthed Vessel Sounds Lower
Weapons & FortificationFortification Sketches and a Measured Millstone
Weapons & FortificationOverlapping sketches of military architecture
Physics & MechanicsPercussion notes, grain from a sieve, and a pulley-raised stair
Weapons & FortificationOverlapping drawings of fortifications
Physics & MechanicsHollow arrow, jointed lance, and screwable tubular fittings
ArchitectureBridge from Pera to Constantinople
CartographySurvey of Porto Cesenatico with projecting bastions
Weapons & FortificationSurvey of the fortress at the port of Cesena
Weapons & FortificationHeight of a fortress turret measured from the water
LandscapePanorama of a town with its port-canal
ArchitectureBird's-eye view of two large buildings, with a screw weight-lift
Physics & MechanicsCounterweight and pulley on an incline, and a water-wheel
HydraulicsCanal barriers, plank joints, and a spoked-wheel mechanism
Machines & DevicesBeam joints and a camp bed with strapping
HydraulicsUndershot water wheel and board joints
Machines & DevicesBoard joints rated for strength
HydraulicsA winding river and timber-joint studies
Physics & MechanicsWhy Romagna's four-wheeled carts move badly
Fables & ProseFlax dedicated to death and corruption
GeometryGeometric diagrams with untranscribed notes
Arithmetic & ProportionFinding the cube root of 81 by a rectangle rule
ArchitectureArchitectural sketches: arches, columns and profiles
ArchitectureArchitectural sketch: pilaster over a scrolled base
CartographySurvey distances and compass bearings
CartographyTopographic survey of the city of Urbino
Painting & PerspectiveColours fading to blue with distance; a rebound test
GeologyMountains and valleys reshaping the terrestrial sphere
Civil EngineeringExcavating machines and a sketch-map of Populonia
BotanyGrapes brought to Cesena; a Populonia map-sketch
Painting & PerspectiveWhy a shore looks longer than a mountain from the sea
HydraulicsOf water and air; the harmony of falling water
Physics & MechanicsRule of power; plan of the fortress of Urbino
Painting & PerspectiveOn painting: knowing anatomy to render nudes
Physics & MechanicsOn the loss of the voice through distance
Arithmetic & ProportionVoices, arithmetic operations and a group of flowers
Figure StudiesFigure of a kneeling person
CartographyPlanimetric sketch with measurements and winds
BotanyA Group of Trees in Red Chalk
CartographyCoast of Populonia, a Crossbow Question and a Cart
Civil EngineeringScheme for Excavating a Ditch
CartographyCartographic Sketch of a Rocky Coast
Physics & MechanicsA Moving Body on an Inclined Plane
Physics & MechanicsWeight on a Cord in a Quadrant of a Circle
Physics & MechanicsFriction and the inclined plane: the effort of ascent
Physics & MechanicsPulleys and windlasses for raising weights and earth
Physics & MechanicsBalanced rods: weight, resistance and the center of support
Weapons & FortificationSchemes for artillery fire, with a heading 'of the holly'
Machines & DevicesA hinged door, in side view and in plan
Painting & PerspectiveHow to draw landscapes in light and shade
BotanyVarieties of Trees for the Painter
Machines & DevicesSighting Instrument: The Eye That Takes Aim
CartographyBearings and Distances Around Imola
Machines & DevicesSketch of a Crane and Indeterminate Figures
Machines & DevicesBarrel Section, Pulley and a Mill Mechanism
Machines & DevicesWindmill Mechanism
Machines & DevicesWindmill Parts, a Divided Square and a Compartmented Beam
Fables & ProseProphecy of the Treasure-Bearing Mules; a Note on Wages
Optics & LightLand-Measure Units and a Water-in-Sunlight Experiment
Physics & MechanicsA Column Under Load, a Subdivided Square and a Colour Note
Machines & DevicesClock Gearing Labelled Venus and Sun; Weights of Earth
Weapons & FortificationBallistics Trials with Gunpowder; Weights of Water, Sand and Earth
Machines & DevicesClock-like gear train and a note on the word 'caleffato'
Lists & AccountsAccount for Salai's cloak, 4 April 1497
Personal NotesMemoranda: the Archimedes of Padua, an itinerary, and sums
Inside cover: blue pastedown with annotations