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Deforestation, the decline of the horse, and the spread of the tsetse fly and trypanosomiasis (nagana) in nineteenth century Sierra Leone

Published online by Cambridge University Press:  22 January 2009

D. C. Dorward  and
A. I. Payne
D. C. Dorward
Affiliation:
C. W. A. S., University of Birmingham
A. I. Payne
Affiliation:
Fourah Bay College
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Extract

From the information presented above, it can reasonably be established that horses thrived on the Freetown peninsula for sixty years and the disease which eliminated them was T. brucei. This disease was prevalent for at least 15 years although it eventually disappeared, probably before 1900. In addition, clearance of the forest, in three overlapping phases, was carried out prior to and during the outbreak.

From the ecology of the three species of tsetse fly possibly implicated in the outbreak of the disease in Sierra Leone, it can be deduced that deforestation and the consequent regeneration and cultivation led to favourable conditions for the expansion of at least G. palpalis and G. longipalpis, and possibly also of G. morsitans. Taking into account the information currently available on the inter-relationships between tsetse fly and trypanosome species, it can also be suggested that G. longipalpis was probably the primary source of the disease but that the disease was sustained, particularly around Freetown itself, by G. palpalis and possibly by other biting flies. That G. longipalpis or even G. morsitans probably initiated the outbreak makes the eventual disappearance of the disease more understandable since both of these species relied upon regenerated forest and an abundance of game, resources which diminished as agriculture progressed. It is likely that these primary carriers infected horses and cattle moving between the provinces and Freetown, thereby providing the link in spreading the disease to the Colony.

It appears therefore that the removal of the forest led to the outbreak of trypanosomiasis in horses. A different and more rational approach to forestry in Sierra Leone would have avoided this altogether. In fact it is fortunate that the consequences of this indiscriminate deforestation were not more serious since all three tsetse flies in question are carriers of the human sleeping sickness, T. gambiense. For some reason, however, this species of trypanosome, whilst common in the interior, is not prevalent in the coastal areas of West Africa, though there was in fact, an epidemic of this disease in the 1930s in the Kaiahun area, associated with G. palpalis.

Since the horse is relatively sensitive to tsetse fly and its associated trypanosomes, this animal is a good indicator of the presence of trypanosomiasis. Dr McCoy in his memorandum mentions that horses thrive in the Gambia and at Lagos and that ‘loin disease’ was unknown in these places. He makes no reference, however, to horses in Ghana. The history of the horse in other parts of West Africa may therefore be worth pursuing in this respect.

Type
Research Article
Information
The Journal of African History , Volume 16 , Issue 2 , April 1975 , pp. 239 - 256
Copyright
Copyright © Cambridge University Press 1975

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References

1 Fyfe, Christopher, A History of Sierra Leone (Oxford, 1962), 294.Google Scholar

2 Public Record Office, London: CO 267/447. Gov. Nathan to C.O., 20 Aug. 1899.

3 Fyfe, , History, 294, 603.Google Scholar

4 Richards, Paul W., ‘The Tropical Rain Forest’ Scientific American vol. 229, No. 6 (12 1973), 58–67.CrossRefGoogle Scholar

5 Peterson, John, Province of Freedom (London, 1969), 88Google Scholar. The first Freetown Fair was held during the week of 30 Mar. 1818 and was somewhat marred by the absence of the Governor. Royal Gazette and Sierra Leone Advertiser, 4 04 1818.Google Scholar

6 Royal Gazette and Sierra Leone Advertiser, 25 10 1823.Google Scholar

7 Fyfe, , History, 145.Google Scholar

8 Melville, E. H., A Residence in Sierra Leone (London, 1849), 9–10.Google Scholar

9 Poole, Thomas Eyre, Life Scenery and Customs in Sierra Leone and the Gambia (London, 1850), I, 304–5.Google Scholar

10 Systematic evidence relating to the origins of horses imported into the colony is not available before 1853, when a duty of £I per horse was introduced and the Customs Department began recording entries. Local horses were imported from the Gambia and Gor´e, though most were simply listed under the vague designation ‘Windward Coast’. Order of the Governor and Council, 12 07 1853Google Scholar. Sierra Leone Blue Books, 1853–1864.

11 Sierra Leone Blue Book, 1811; Sierra Leone Blue Book, 1828.

12 In 1851, for example, the total revenue from the Horse and Carriage Tax was a relatively high £174, out of a total local revenue exclusive of customs of £4,640 18s. 4d. and a total local revenue of £19,842 13s. 10d. Annual Report for Sierra Leone for the Year 1851, Command Paper 1539 (1852).Google Scholar

13 List of Persons who have paid Horse and Carriage Tax for the year 1853; List of Persons who have paid Horse and Carriage Tax for the year 1854, Gazettes and Public Notices, 1851–1861, Sierra Leone Archives, Freetown.

14 Sierra Leone Blue Book, 1858. The revenue from Horse and Carriage Tax fluctuated radically before 1856 but the fall in revenue for individual years was never so dramatic and was generally attributed by the authorities to tax default or arrears, an unusually candid admission for a colonial administration. Sierra Leone Blue Books, 1830–1836.

15 DrBradshaw, , Petition for financial compensation, n.d., Minutes of the Governor's Council, 29 12 1860Google Scholar, Sierra Leone Archives.

16 Governor Blackall to C.O., 19 01 1864Google Scholar, Sierra Leone Archives.

17 Governor Hill to C.O., 2 08 1858Google Scholar, Sierra Leone Archives.

18 Governor Blackall to C.O., 28 10 1863Google Scholar, Sierra Leone Archives.

19 CO 267/32. Covering note with the Colonial Surgeon's memorandum, Governor Kennedy to Crown Agents, 7 03 1871.Google Scholar

20 This hearsay evidence is slightly inaccurate as ‘loin disease’ was first commented upon in 1856.

21 CO 267/32. ‘Notes on the peculiar disease of the horse in Sierra Leone known as “Loin Disease”’: a memorandum drawn up by the Colonial Surgeon, DrMcCoy, R. W., 7 03 1871.Google Scholar

22 Ibid.

23 CO 267/32. Reply by Deputy Professor William Pritchard of the Royal Veterinary College to MrSargeaunt, W. C., 22 06 1871.Google Scholar

24 Fiennes, R. N. T., ‘Pathogenesis and pathology of animal trypanosomes’, in The African Trypanosomiases, Mulligan, H. W. (ed.), (London, 1970), 729–50.Google Scholar

25 Henning, M. W., Animal diseases in South Africa (South Africa, 1949), 522–61.Google Scholar

26 Stephen, L. E., ‘Clinical manifestations of the trypanosomiases in livestock and other domestic animals’, in The African Trypanosomiases, 774–95.Google Scholar

27 Ibid.

28 Lambrecht, F. L., ‘Aspects of evolution and ecology of tsetse flies and trypanosmiasis in prehistoric African environment’, J. Afr. Hist., V (1964), 1–24.CrossRefGoogle Scholar

29 Nash, T. A. M., Tsetse flies in British West Africa—part III, Sierra Leone (London, 1948), 47–60.Google Scholar

30 Ford, J., ‘The geographical distribution of Glossina,’ in The African Trypanosomiases, 274–297.Google Scholar

31 Gordon, R. M. and Davey, T. H., ‘An account of trypanosomiasis at the Cape Light- house Peninsula, Sierra Leone,’ Ann. Trop. Med. Parasit., XXIV (1930), 289–312.CrossRefGoogle Scholar

32 Stephen, , ‘Clinical Manifestations of the Trypanosomiases in Livestock …’Google Scholar

33 Fyfe, , History, 325.Google Scholar

34 MacLennan, K. J. R., ‘The epizootiology of trypanosomiasis in livestock in West Africa’, in The African Trypanosomiases, 757–65.Google Scholar

35 PRO: CO 267/443. Lt Wilfred Russel Howell to Capt. Smith, , 3 09 1898Google Scholar. Enclosed in covering note from Director of Military Intelligence to Under S. of S. for Colonies, 7 Sep. 1898.

36 Stephens, ‘Clinical Manifestations of The Trypanosomiases in livestock …’.Google Scholar

37 Personal communications.

38 Buxton, P. A., The natural history of tsetse flies, London School of Hygiene and Tropical Medicine, Memoir No. 10 (London, 1955), 261–314.Google Scholar

39 Ibid.

40 Nash, , Tsetse flies in British West Africa—part III, Sierra Leone, 47–60.Google Scholar

41 Adam Afzelius Journal, 28/5/95, Kup, Peter ed. (Uppsala, 1967), 17.Google Scholar

42 PRO: WO 1/352 Quiries proposed by Commodore Hollowell; with the Governor of Councils answers, 12 Jan. 1803, 8th Quiry.

43 PRO: CO 267/92, App C—22. Evidence of John McCormack to Commission of Inquiry into the state of the Colony of Sierra Leone, I May 1826.

44 PRO: CO 267/92, App C—21. Evidence of Mr Henry Williams to Commission of Inquiry into the state of the Colony of Sierra Leone, 8 May 1826.

45 Fyfe, , History, 125.Google Scholar

46 Ibid. 126.

47 PRO: CO 267/91. Report of the Commission of Inquiry into the State of the Colony of Sierra Leone, House of Commons Paper, 7 May 1827.

48 PRO: CO 267/92, App. C—22.

49 PRO: CO 267/92, App. C—21.

50 Alldridge, T. J., The Sherbro Island and its Hinterland, (London, 1901).Google Scholar

51 PRO: CO 267/91, Report of the Commission of Inquiry …' 1827.

52 Fyfe, , History, 125Google Scholar

53 Cole, N. H. A., The vegetation of Sierra Leone, (Njala University College Press, Sierra Leone, 1968).Google Scholar

54 PRO: CO 267/92, App. C—22.

55 Ibid.

56 PRO: CO 267/101. Ward and James to Mr R. W. Hay, Jan. 1829.

57 Fyfe, , History, 186.Google Scholar

58 PRO: CO 267/159. Gov. Doherty, to His Lordship John Russell, 22 04 1850.Google Scholar

59 Fyfe, , History, 298.Google Scholar

60 Ibid. 239.

61 Ibid. 258. Blue Books for Sierra Leone, 1840–1850.

62 Fyfe, , History, 248.Google Scholar

63 Ibid. 298.

64 Ibid. 308, 309.

65 Ibid. 372.

66 Ibid. 420.

67 Alldridge, The Sherbro Island and Its Hinterland.

68 PRO: CO 267/159, Gov. Doherty to His Lordship John Russell, 22 Apr. 1840.

69 Nash, , Tsetse Flies in British West Africa—part III, Sierra Leone, 51.Google Scholar

70 Cole, , The Vegetation of Sierra Leone, 12.Google Scholar

71 Ibid. 183–4. Bakshi, T. S., ‘Vegetation’, in Stobbs, A. R. (ed.), The Soils and Geography of the Boliland Region of Sierra Leone (1963), 30–4.Google Scholar

72 Pomeroy, A. W. J., Report of the Medical Entomologist: Appendix G, Gold Coast Medical and Sanitary Reports, 1929–1930, 121–9.Google Scholar

73 Buxton, , The Natural history of Tsetse flies, 351.Google Scholar

74 Yorke, W. and Blacklock, B., ‘Notes on the bionomics of Glossina palpalis in Sierra Leone, with special reference to its pupal habits’, Ann. Trop. Med. Parasit., IX (1915) 349–62.CrossRefGoogle Scholar

75 Buxton, , The Natural History of Tsetse Flies, 291–2.Google Scholar

76 Nash, , Tsetse Flies in British West Africa—part III, The Gold Coast, 32.Google Scholar

77 Kleine, F. K., ‘Positive infectionversuche mit Trypanosoma brucei durch Glossina palpalis’, Deutsch med. Wschr., XXXV (1909), 469–70.Google Scholar

78 Stephens, , ‘Clinical Manifestations of the Trypanosomiases in Livestock …’, 592–653Google Scholar. Buxton, , The Natural History of Tsetse flies, 592–653.Google Scholar

79 Ibid. 672.

80 Ibid. 642–53.

81 MacLennan, , ‘The epizootiology of Trypanosomiasis …’.Google Scholar

82 Buxton, , The Natural History of Tsetse Flies, 291–2.Google Scholar

83 Personal communication, DrFord, J., 14 11 1974.Google Scholar

84 Hoare, C. A., ‘Systematic description of the mammalian trypanosomes of Africa’, The African Trypanosomiases, 24–59.Google Scholar

85 Ford, J., The Role of Trypanosomiasis in African Ecology, (Oxford, 1971), 421–2.Google Scholar

86 Stephen, , ‘Clinical Manifestations of the Trypanosomiases in livestock …’, 621–3.Google Scholar

87 Austen, E. E., A Monograph of the Tsetse Fly (1903), 92.Google Scholar

88 Nash, , Tsetse Flies in British West Africa–part III, Sierra Leone, 47–60.Google Scholar

89 PRO: CO 267/32, ‘Notes on The peculiar disease of the Horse in Sierra Leone known as “Loin Disease”’: A memorandum drawn up by the Colonial Surgeon, DrMcCoy, R. W., 7 03 1871.Google Scholar

90 The authors wish to express their gratitude to Professor Christopher Fyfe, Dr John Ford, and Dr Peter Mitchell for their assistance, encouragement, and criticism during the preparation of this paper.