101 x 75 mm. A view of a plantation of seven-year-old Funtumias showing the effects of close planting and late thinning. With an African youth seated in the foreground.

78 x 101 mm. A view showing the leaves of a sickly young tree with profuse flower development. Photograph probably by Christy.

102 x 76 mm. A view showing the four members of the Congo Sleeping Sickness Commission standing in front of a cage covered in gauze, presumably built to store captured tsetse flies. The figures are, from left to right, Dr John Lancelot Todd (1876-1949), Dr Inge Heiberg, representing the Congo Government on the Commission, Cuthbert Christy and Dr Joseph Everett Dutton (1874-1905). Photographer unknown.

Nineteen loose leaves recording the distribution of filariae in the places Christy surveyed.

Article published in the journal Knowledge, Jan. 1912, 13.

158 x 114 mm. A view showing a woman, probably Somali, seated on an ox with her belongings. Photograph probably by Cuthbert Christy.

300 x 87 mm. A panoramic view looking along a street in Madeira with a dry river bed in the centre of the print. Photograph presumably by Christy.

Copies of letters (100 leaves) written by Christy during his work for the Sudan Sleeping Sickness Commission. Some also relate to the specimens he collected during the Congo Zoological Mission. An alphabetical index of recipients is included.

The diary (300 pages) records regional sleeping sickness inspection tours and the mapping of the Nile-Congo boundary for the Sudanese Government. It includes considerable zoological notes, and descriptions of the terrain, missionary stations, and the African peoples that Christy encountered. In many entries, Christy has underlined key words in the text or written summaries in the margins.

Diary and letters written by Christy during his work for the Sudanese Government.

73 x 92 mm. A studio photograph showing the 'Funtumia knife' and pricker, and a double instrument which performs both functions.

72 x 99 mm. A view showing a Swahili on climbing slings using a Funtumia knife to score tapping lines in a rubber tree using the D.H.S. system (the Double Half Spiral) with alternate spiral lines running into a central vertical line which leads down to the collection cup.

74 x 95 mm. A view showing a Swahili on climbing slings using a Funtumia knife to score tapping lines in a rubber tree using the D.H.S. system (the Double Half Spiral) with alternate spiral lines running into a central vertical line which leads down to the collection cup.

101 x 76 mm. A view showing an African youth standing beside a ten-year-old Funtumia. The tree illustrates the vertical system of tapping.

Prospectus of the book written by Christy and published by John Bale, Sons & Danielsson in 1911.

104 x 79 mm. A view showing the Boga Chef de Poste and his askaris standing on the left (Congo) bank of the Semliki River near Lessi. The rows of wooden stakes in the river are fish traps.

115 x 85 mm. A view showing an old bull shot by Christy in the Ituri Forest.

72 x 93 mm. A view showing an incision being made in the bark of a rubber tree with the cutting end of a 'Funtumia knife'.

74 x 94 mm. A view showing the groove being deepened with the pricking end of the 'Funtumia knife'.

95 x 74 mm. A view showing a white rhinoceros shot by Christy in order to capture its calf for the Antwerp Zoological Gardens.

95 x 74 mm. A view showing a white rhinoceros shot by Christy in order to capture its calf for the Antwerp Zoological Gardens.

95 x 74 mm. A view showing a white rhinoceros shot by Christy in order to capture its calf for the Antwerp Zoological Gardens.

100 x 74 mm. A view showing a white rhinoceros shot in the Bahr el Ghazal area (Nile-Congo Divide) [possibly Bahr al Ghazal in Sudan] by Christy, with two rifles laid against the stomach of the animal.

100 x 74 mm. A view showing a white rhinoceros shot in the Bahr el Ghazal area (Nile-Congo Divide) [possibly Bahr al Ghazal in Sudan] by Christy, with two rifles laid against the stomach of the animal.

100 x 74 mm. A view showing a white rhinoceros shot in the Bahr el Ghazal area (Nile-Congo Divide) [possibly Bahr al Ghazal in Sudan] by Christy, with two rifles laid against the stomach of the animal.