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Letter from William Bear to an unnamed correspondent

120

Letter from William Buckland to C D Archibald

230

Letter from Sir Charles Lyell to Hugh Edwin Strickland

115

Letter from John James Audubon to Miss Bennet

115

Letter from James de Carle Sowerby to Mrs Riley

185

Letter from Peter Ewart to Messrs Maudslay Sons and Field

190

Record book relating to measurements of and fittings for ship types and schemes of prices for boat-builder's work

165

Letter from Francoise Pierre Guillaume Guizot to Henriette Guizot

210

Letter from William Simms to Messrs Maudslay and Field

190

"Report from the Select Committee on the Thames Tunnel; with the Minutes of Evidence"

Booklet

Division. Sheet 2 of 9.

one sheet

Verticals for one barrel group "A. Sheet 2 of 2.

one sheet

Approximative division, continued. Sheet 10 of 12.

one sheet

Notation of locking for square root.

two sheets

Trains of variations 5, 6, 8, 9 of division. Sheet 3 of 7.

one sheet

Steps of the trains in one barrel in group "F and I during operations in the mill and during subsidiary operations in the store.

one sheet

Verticals for approximative division. Sheet 3 of 4.

one sheet

Trains in addition in mill. Barrel divided for verticals.

one sheet

Sketches of various notations.

one sheet

Steps of trains on barrels of all the groups. Sheet 4 of 5.

one sheet

Square root. Sheet 2 of 4.

one sheet

Addition.

one sheet

Addition and subtraction of 120 figures. Sheet 3 of 3.

one sheet

Letter from Sir Marc Isambard Brunel to Sophia Hawes

100

Letter from John Dalton to his cousin R Benson

230

Letter from John Dalton to T E Suliot

225

Letter from William Whewell to B Dockray

190

"Thames Tunnel. Copies of Treasury Minutes and Correspondence relating to the Application of the Thames Tunnel Company..."

Booklet

Letter from Sir Marc Isambard Brunel to Isambard Kingdom Brunel

200

Letter from Michael Faraday to Professor Henslow

115

Verticals. Division. Sheet 2 of 3.

one sheet

Plan 17, store on a rack. Arrangement.

one sheet

Consecutive counting apparatus.

one sheet

Wheels for driving the adding axes. Plan.

one sheet

Lifters for selecting the multiple of the Multiplicand or Divisor. Plan, two elevations.

one sheet

Part 1. Sketch of some of the centres et cetera for Plan 16. Arrangement.

one sheet

Part 2. Sketch of some of the centres, et cetera for Plan 16. Arrangement.

one sheet

Part 1. Plan and elevation of adding wheels, long pinions and intermediate pinions, plan, two elevations. Part 2. Lifting axes and fixed wires, plan, elevation.

one sheet

Combinatorial and decimal counting apparatus comprising plan, elevation and description.

one sheet

Sketch 14. Arrangement, probably incomplete.

one sheet

Sketch of General Plan No. 22. Arrangement and rack. Discussed and rejected.

one sheet

Sketch 13. General arrangement, circular. Showing 30 variables, 5 barrels with reducing apparatus, punch card mechanism, printing apparatus. Notes introduction of great bevel wheel 18 March 1837.

one sheet

Plan 16. Arrangement, several partial arrangements, numerous notes.

one sheet

Passport

461

Visitors pass

Visitors pass

Intended for engraving. Shows six barrels with reducing apparatus.

one sheet

Algebraic addition to suit notation 114. Unfinished. Superseded by notation 122.

one sheet

Verticals. Approximative division. Sheet 3 of 3.

one sheet

Division. One turn of hand for each figure of quotient. Two sets of selectors. Standard Case. Sheet 1 of 9.

one sheet

Cases of common and approximative multiplication and division.

seven sheets