41. Talbot Photo 21(41) Reference (shelfmark): Talbot Photo 21(41) Title: [Geometrical Drawing.] Scope & Content: Pencil drawing of two four-sided polygons superimposed onto each other. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
42. Talbot Photo 21(42) Reference (shelfmark): Talbot Photo 21(42) Title: [Geometrical Drawing.] Scope & Content: A drawing in ink on watermarked paper; it comprises of several overlapping lines, a letter of the alphabet has been written at each intersection. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
43. Talbot Photo 21(43) Reference (shelfmark): Talbot Photo 21(43) Title: [Drawing of a Circle.] Scope & Content: A circle drawn in pencil by a compass on waxed paper. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
44. Talbot Photo 21(44) Reference (shelfmark): Talbot Photo 21(44) Title: [Drawing of a Circle.] Scope & Content: A circle drawn in pencil by a compass on waxed paper. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
45. Talbot Photo 21(45) Reference (shelfmark): Talbot Photo 21(45) Title: [Drawing of a Circle.] Scope & Content: A circle drawn in pencil by a compass on waxed paper. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
46. Talbot Photo 21(46) Reference (shelfmark): Talbot Photo 21(46) Title: [Triganometrical Drawing.] Scope & Content: A drawing of a circle with several tangents and secants, letters of the alphabet have been written where the lines meet the circle. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
47. Talbot Photo 21(47) Reference (shelfmark): Talbot Photo 21(47) Title: [Drawing of a Prism.] Scope & Content: A mathematical drawing in ink of a prism; the paper, which had been folded into quarters, is watermarked with 'F A B'. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
48. Talbot Photo 21(48) Reference (shelfmark): Talbot Photo 21(48) Title: [Mathematical Drawing.] Scope & Content: Mathematical drawing in pencil and ink, the central scale line is in pencil with curves drawn either side in ink with faint intersection lines drawn in pencil. The paper had been folded in half. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
49. Talbot Photo 21(49) Reference (shelfmark): Talbot Photo 21(49) Title: [Drawing of a Microscope.] Scope & Content: Drawing in ink of a microscope showing the function of the lenses, notes written in Talbot's hand. Collection Area: Visual Arts Languages: Not applicable Date Range: Unspecified Extent: 1 item
50. Talbot Photo 21(50) Reference (shelfmark): Talbot Photo 21(50) Title: [Optical drawing of a crystal viewed by polarized light.] Scope & Content: Geometrical shapes stamped with pink and grey borders. Collection Area: Visual Arts Languages: Not applicable Date Range: 1836 Extent: 1 item