Marshall's Geological Diagrams
Manuscript entitled: "Catalogue of the Apparatus of Philosophical Instruments, in the Collection of Her Late Majesty Queen Charlotte, at the Observatory at Richmond in Surrey"
Reverse motion for cross planing.
Back and end elevation of cross slide.
Side and end elevations of feed and driving apparatus
Plan, elevation and section of cross slide.
Small planing machine. Sheet 1.
Plan of left half of middle group for General Plan 28.
Plan of mill, table wheels and carriage. Sheet 31.
Carriage and racks in sections. Sheet 10.
Platform raising apparatus. Sheet 33.
Sections of framing and racks. Sheet 6.
Long pinions in the position for stepping. Adding wheels and short pinions behind long wheels.
Untitled plan and elevation. Incomplete.
Untitled pencil layout, includes mill racks.
Drawing of the parts controlling the positioning and punching of the decimal point
Sheet 1. Successive reduction of three simultaneous equations in three variables to find the solution for one variable.
Sheet 2. Successive reduction of five simultaneous equations in five variables to find the solution for one variable.
Print of the College at Manchester
Approximative multiplication. Summary of multiplication. Sheet 2 of 5.
Arithmetical example of multiplication as performed in Notation 220.
Selectors, drawings 82 and 83.
Notation of consecutive and half zero carriage.
Reversing sign ascertaining if a variable is zero, ascertaining if a variable has a + or - sign (supersedes 223).
Division. Working notation belonging to Summary No. 244 which superseded Notation 241.
Stepping up.
Stepping down.
Multiplication with three multiples. Sheet 2 of 2.
Plan of the left half to middle group for General Plan 28.
Elevation of parts of middle group drawn in plan on No. 127.
Elevation of parts of the card counting apparatus for operation and variable cards.
Sketch of an apparatus for advancing stereotype frames of the Difference Engine by cranks and backing them by weights. Superseded. Plan, elevation.
Approximative division. Standard case. Sheet 4 of 12.
Division, continued. Sheet 2 of 12.
Multiplication. Sheet 1 of 4.
Vertical motions of the wheels and axes of the centre group. Plans 28 and 28a. Sheet 2 of 4.
36 variations of approximative division. Sheet 12 of 12.
Approximative division, continued. Sheet 10 of 12.
Verticals for approximative division. Sheet 2 of 4.
Verticals for multiplication. Notation 108.
Standard case of approximate multiplication. Sheet 3 of 4.
Approximative division, continued. Sheet 7 of 12.
Approximative division, continued. Sheet 8 of 12.
Cases of common multiplication and their corresponding variations introduced. Sheet 1 of 7.
Verticals for division. Sheet 1 of 4.
Verticals for approximative division. Sheet 4 of 4.
Notation of approximative multiplication.
Addition.
