


Scottish letters patent granted to Thomas Farmer for obtaining sulphur, sulphurous acid and other products from pyrites

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

Letters patent granted to Stephen Geary for 'Improvements in the preparation of fuel'

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.

Adding axis and wheels without framing

Solution of two simultaneous equations

Notation for the coefficients of the powers of x Computation of the coefficients of a polynomial from those of another divided by a linear term.

Frame of adding wheels

Motion for carrying the tens, plus and minus.

Section of adding wheels and framing.

Long pinions in the position for stepping. Adding wheels and short pinions behind long wheels.

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.

Tabulation of a quartic by differences

Generation of the coefficients in the product of two cosine series

Generation of the coefficients in the product of two polynomials

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

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

Reduction of the three equations

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

List of designs. Cross reference list, showing numbers of drawings, pages of sketch books and numbers of notations.

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

Reduction of three simultaneous equations in three variables to two simultaneous equations in two variables
