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Trains ordered by one barrel on group "F and group "A. Sheet 1 of 2.

The general plan of Mr. Babbage's Great Calculating Engine. Arrangement and rack, details, et cetera.

Notation and description of the carriage drawn on Notation 81.

The first drawing of the circular arrangement of the new engine

Parts of plan, elevation and section of rising platforms for store. Superseded in following sheet.

Duties of the calculating mechanism of Plan 28a. Centre group. Sheet 7 of 11.

Enumeration of trains on groups I and "F.

Untitled. [Vertical positions of some of the wheels of Plan 28a. Notation 348 and 331 cycles]. Sheet 12 of 13.

Motions of some of the axes for Plan 28. Sheet 3 of 8.

Drawing of the Difference Engine

List of the combinations in division performed as in Notation 290, with the cycles in which they occur. Sheet 2 of 4.

[Lockings (circular) of Plan 28]. Sheet 2 of 2.

Extraction of square root. Sheet 4 of 4.

Algebraic addition of k figures.

Notation of units.

Approximative division, continued. Sheet 6 of 12.

Analysis of verticals on left group for multiplication.

General plan and details of cams for driving calculating axes.

Skeleton of vertical motions for all operations. Right groups. Multiplication and division from 372 Sheet 1. Sheet 1 of 3.

Notation of the counting apparatus, et cetera, to suit Notation 39, for multiplication.

Case of multiplication adapted to Notations 183 and 206.

Multiplication. Periods of counting apparatus.

Mill. Sheet 1 of 2.

List of the combinations in division performed as in Notation 290, with the cycles in which they occur. Sheet 1 of 4.

Analysis. Sheet 3 of 4.

Division continued. Sheet 2 of 4.

Notation of units for stereotype printing apparatus.

Vertical movements of axes ordered by left barrel for multiplication compiled in part from a genealogical notation. Sheet 3 of 3.

Steps of trains on barrels of all the groups. Sheet 1 of 5.

Algebraic addition. Sheet 1 of 2.

Multiplication, division and addition for verticals. Sheet six of six.

Algebraic addition if more than 40 figures. Case 8. Sheets 5 and 6 of 6.

Algebraic addition of i k figures. Cycle ordered by vertical "a of centre barrel. Sheet 21 of 23.

Duties of the calculating mechanism of Plan 28a. Centre group. Sheet 3 of 11.

Text relating to drawings

History.

List of verticals on one barrel for division (Notation 290) with the equivalent verticals on five barrels to order the same work.

Cases of common multiplication and their corresponding variations introduced. Sheet 1 of 7.

Division without table. Sheet 4 of 4.

Verticals of algebraic addition of i k figures. Notation 321. Sheet 2 of 3.

Untitled. [List of the combinations in division performed as in Notation 290, with the cycles in which they occur] Sheet 4 of 4.

Apparatus for moving stereotype frames for Analytical and Difference Engines. Plan, elevation.

Algebraic addition of k figures.

Multiplication. Sheet 1 of 3.

Trains and vertical motions of the wheels and axes ordered by barrel no. 1 of the mill counting apparatus of Plans 28 and 28a for multiplication, as performed in the working Notation 268. Sheet 1 of 2.

Trains in division.

Sketches of various notations.

Vertical positions of the wheels of Plan 28. Sheet 6 of 23.

Notation of units.

List of plates.