


Letters patent granted to Thomas Farmer for 'Improvements in treating Pyrites to obtain Sulphur, Sulphurous Acid and other products'

Sketch books of drawings of fragments recovered from the shipwrecks of the Royal George and the Edgar

Volume entitled; "Specimens of turning by Henry Perrigal Esqr. and given by him to Jas. Wilcox"

Volume entitled: "Customs of Mendipp Mines"

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"

Difference Engine index of parts.

On putting letters to drawings, in draft.

Digit counting apparatus on the two upper wheel selectors.

Store variable selectors. Superseding drawing No 2.

Motion for carrying the tens, plus and minus.

Lifting apparatus by screw. Sheet 9.

Carriage and racks in sections. Sheet 10.

Side and end elevation of feed motion with shade. Second revision.

Sections of framing and racks. Sheet 6.

Side and end elevation of feed motions. Showing the bands in different colours.

Reverse motion for cross planing.

Back and end elevation of cross slide.

Side and end elevations of feed and driving apparatus

Small planing machine. Sheet 1.

Elevation and section of cross slide.

End and side elevation of Large Universal Machine.

Plan, elevation and section of cross slide.

Plan of left half of middle group for General Plan 28.

Plan of Large Universal Machine.

Untitled plan and elevation. Incomplete.

Plan of mill, table wheels and carriage. Sheet 31.

Adding column with motion for changing from plus to minus. Incomplete.

Platform raising apparatus. Sheet 33.

Untitled. A model of six cages was made from this drawing. Incomplete.

Notation for computing the elliptic radius vector by having the eccentricity and the mean anomaly

Reduction of the three equations

Draft copy of Plan 28, dated 28 December 1842.

The drawings of the New Engine arranged according to the subjects alphabetically. Analytical.

Notation of the reduction of the three equations. Successive reductions of three simultaneous equations in three variables to find the value of one variable

My Machine 1888 II Plan of driving cams, levers, etc. in initial position.

My Machine 1889 III Development of driving cams.

Principles to be followed in the description of the constituent portions of the Analytical Engine.

Pages 61 and 62 of Alfred Kitching's diary

Pages 59 and 60 of Alfred Kitching's diary

Pages 1 and 2 of Alfred Kitching's diary

Pages 13 and 14 of Alfred Kitching's diary

Pages 9 and 10 of Alfred Kitching's diary

Pages 23 and 24 of Alfred Kitching's diary

Pages 21 and 22 of Alfred Kitching's diary

Pages 19 and 20 of Alfred Kitching's diary

Pages 17 and 18 of Alfred Kitching's diary

Pages 33 and 34 of Alfred Kitching's diary
