


Division. Rough drafts of parts of Notations 272 and 273.

Division. Sheet 2 of 6.

Vertical positions of the wheels of Plan 28 for multiplication. Sheet 14 of 23.

Vertical movements of axes ordered by right barrel for multiplication compiled in part from a genealogical notation. Sheet 1 of 3.

Algebraic addition of k figures.

Vertical positions of the wheels of Plan 28 for artificial stepping of divisor. Sheet 17 of 23.

Division. Working notation belonging to Summary No. 244 which superseded Notation 241.

Vertical positions of the wheels of Plan 28 for algebraic addition of i k figures. First part of cycles ordered by verticals n and 'n of centre barrel. Sheet 20 of 23.

Division.

Verticals for left and middle barrels for multiplication. Notation 268. Sheet 3 of 4.

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

Division. Sheet 1 of 6.

Arithmetical example of multiplication as performed in Notation 220.

Verticals for right and table barrel for multiplication. Notation 268. Sheet 2 of 4.

Algebraic addition.

Multiplication.

Summary of algebraic addition.

Cards and barrels.

Verticals for barrels for multiplication.

Algebraic addition.

Vertical positions of the wheels of Plan 28 algebraic addition of k figures. Sheet 19 of 23.

Approximative multiplication for Plans 28 and 28a. Sheet 1 of 8.

Division. Sheet 4 of 6.

Description of parts and their duties. Plan 28.

Approximative multiplication for Plan 28. Sheet 2 of 8.

Verticals for division as performed on Notation 218 arranged on one barrel.

Counting apparatus. Approximative multiplication and division.

Multiplication. Sheet 1 of 3.

Division. Sheet 11 of 15.

Multiplication. Sheet 2 of 3.

Approximative and common multiplication for Plans 28 and 28a.

Division. Sheet 5 of 5.

Algebraic addition of k figures.

Vertical movements of axes ordered by left barrel for division. Sheet 3 of 3.

General directive.

Approximative multiplication for Plan 28. Sheet 3 of 8.

Approximative multiplication for Plan 28. Sheet 4 of 8.

Notation of the counting apparatus (Drawings 95 and 96) for division (Notation 218).

Arithmetic examples of algebraic addition of n times k figures. Sheet 1 of 2.

Algebraic addition of i k figures.

Arithmetic examples of algebraic addition of n times k figures. Sheet 2 of 2.

Division. Sheet 2 of 15.

Algebraic addition of i k figures (General Plan 28). Cycle ordered by vertical ""s of centre barrel. Sheet 23 of 23.

Verticals for one barrel of 278 verticals to perform division with General Plan 28. Sheet 2 of 3.

Carriage.

Division. Sheet 9 of 15.

Verticals for multiplication. Notation 259.

Division. Sheet 8 of 15.
