78 x 100 mm. A view showing an African tapping a wild Funtumia tree with the aid of climbing slings and a gouge.

78 x 100 mm. A view showing an African tapping a wild Funtumia tree with the aid of climbing slings and a gouge.

78 x 103 mm. A view showing an African tapping a wild Funtumia tree with the aid of climbing slings and a gouge. Photograph probably by Christy.

148 x 105 mm. View showing an emaciated African lying on the ground at the point of death from sleeping sickness.

95 x 74 mm. A view showing the bird's nest built in a tree over a rock pool. In the foreground an African is poking at the nest with a stick. The location is possibly Bahr al Ghazal in Sudan.

94 x 74 mm. A view showing the bird's nest built in a tree over a rock pool. In the foreground an African is poking at the nest with a stick. Photograph probably by Christy. The location is possibly Bahr al Ghazal in Sudan.

This diary (circa 80 pages) was kept by Christy during a tour of Nigeria and Benin to survey rubber trees growing in the wild and cultivated in plantations.

The diary (circa 75 pages) records Christy's service as senior medical officer of the Second Battalion West African Field Force in northern Nigeria.

The diary (circa 75 pages) records Christy's service as senior medical officer of the Second Battalion, West African Field Force in northern Nigeria. It includes accounts of campaigns.

Diaries and medical notes written by Christy during his service in Nigeria.

Thirteen leaves describing the collection of fish and the skinning of animals.

A notebook containing circa 30 leaves of zoological notes on elephants compiled from secondary sources.

36 leaves describing the fish collected from Lake Tanganyika and the locations where they were found.

72 x 95 mm. A studio photograph (with scale) showing newly germinated nursery seedlings.

72 x 95 mm. A studio photograph (with scale) showing nursery seedlings around nine months old.

100 x 78 mm. A view showing a large female chimpanzee, shot by Christy and held up to be photographed by his tent boy.

A report (46 leaves) by Christy discussing the findings of his research, including charts of data and a map.

Two annotated copies of a report by Christy discussing the findings of his research, including charts of data and a map.

85 x 60 mm. A view showing an African at the top of a fig-tree telegraph post, 'alive and antproof'.

Diaries, notes, letters, reports, publications and maps written or collected by Christy during his medical and zoological work in Scotland, Africa and India.

85 x 60 mm. A view showing African porters pegging out the skinned bush buck hide to dry.

152 x 110 mm. A view showing a plantation of seven-and-a-half year old Funtumias where alternate trees in each row have been cut out. A European stands in the foreground examining a tree.

116 x 162 mm. A view showing a plantation of seven-and-a-half year old Funtumias where alternate trees in each row have been cut out. A European stands in the foreground examining a tree. Photograph probably by Christy.

Works written by Christy or collected by him relating to medicine, zoology and travel.

105 x 78 mm. A view showing an installation by the bank of the Nile for extracting water for irrigation purposes. Photograph probably by Cuthbert Christy.