68
cases with suspicious signs have presented themselves. Latterly these investigations have been extended to the southern shores of Tanganyika with the same satisfying results.
The work of investigation was begun at the south end of Lake Bangweulu and proceeded along the valley of the Luapula River to Lake Mweru. On Mweru both sides of the lake were visited and the work continued along the border from Mpweto to Moliro on Lake Tanganyika and lastly the southern shores of that lake itself. This work was carried out by Messrs. Noble and Farndale, District Surgeons.
In the course of these investigations it was found that the disease is still con- fined to the Congo Free State and a case was reported at Kasenga on the Congo side of the Luapula River; other cases were reported on the west side of Lake Mweru all fatal—and another fatal case at Vua on the west side of Lake Tangan- yika. All these cases were imported from remote infected areas. Of the blood- sucking flies examined throughout the investigations, Glôssina palpalis was found: (1) on the Luapula River; (2) on the shores of Lake Mweru; and (3) on the western shore of Tanganyika. So far as the investigations have been pursued it may now be safely assumed:-
(1) That there is no sleeping sickness within the confines of North-Eastern
Rhodesia.
(2) That imported cases of the disease exist, and have existed, in parts of
the Congo Free State bordering on North-Eastern Rhodesia.
(3) That these parts of the Congo Free State may, at any time, become infected areas, though there is not sufficient proof to assume that they are so at present.
(4) That Glössina palpalis is known to be present on our borders.
(5) That no cases have occurred on the west coast of Tanganyika in the
Congo Free State south of Vua.
August 7, 1906.
J. C. SPILLANE,
Principal Medical Officer.
69
SIR,
Abercorn, August 4, 1906. I HAVE the honour to send you the following report of my tour round the south end of Lake Tanganyika. I left Abercorn on July 17th, and visiting a number of villages on the way, reached the lake shore at Kasakalawe. From there I went along the south and south-eastern shores of the lake as far as the German border, visiting all villages on the way. I found no cases of trypanosomiasis, and no suspicious cases. The natives there had never even heard of sleeping sickness. Some Swahili natives, who have been living there for several years, knew the disease, but had never heard of it so far south. I saw no tsetse fly during this journey.
I went on to Bismarkburg and made enquiries as to the spread of sleeping sickness in German East Africa. I was told that it is at present unknown in the Bismarkburg District. The Medical Officer from Udjidji has recently visited the villages on the lake shore from Bismarkburg to Udjidji, finding them all quite free from the disease.
At Udjidji there are several cases of sleeping sickness, but all cases are among natives who have come in from the Congo.
There is a tsetse fly on the lake shore near Bismarkburg, and in greater quanti- ties further north; specimens have been sent to Darasalam for classification, but the report not yet received. I also heard that there was a special enquiry being made into sleeping sickness in that part of the country, and have written to the medical officer at Udjidji to ask him to be kind enough to inform us if the disease is found to be spreading south. There is very little communication between this part of the district and the Congo Free State. Arab traders occasionally pass through on their way to or from East Africa. The communication with German East Africa is much more frequent.
I have, &c.,
F. W. FARNDALE,
District Surgeon.
38223
No. 82.
RHODESIA.
BRITISH CENTRAL AFRICA PROTECTORATE: NORTH-EASTERN
ACTING COMMISSIONER PEARCE to THE EARL OF ELGIN.
The Principal Medical Officer,
39408
Fort Jameson.
(No. 244.)
MY LORD,
(Received October 16, 1906.)
Government Offices, Zomba,
British Central Africa, September 3, 1906.
IN continuation of my despatch, No. 239, of the 27th of August, 1906,* I have the honour to transmit a further report on the subject of sleeping sickness, detailing the investigation which has taken place at the southern end of Lake Tanganyika.
SIR,
I have, &c.,
F. B. PEARCE,
Deputy Commissioner.
Enclosure in No. 82.
ADMINISTRATOR OF NORTH-EASTERN RHODESIA to COMMISSIONER.
Fort Jameson, August 25, 1906.
IN continuation of my letter of 18th August, I forward a report received from Dr. Farndale regarding his investigation of the south end of Lake Tanganyika.
I have, &c.,
ROBERT CODRINGTON,
Administrator.
SIR,
No. 83.
THE BRITISH SOUTH AFRICA COMPANY to COLONIAL OFFICE.
(Received October 26, 1906.)
2, London Wall Buildings, London, E.C., October 25, 1906.
I AM directed to acknowledge the receipt of your letter, No. 37558/1906, cî the 23rd instant,* relating to sleeping sickness, and to inform you that, in accordance with the suggestion contained in your letter under acknowledgment, copies of all papers bearing on this subject which are in the possession of this office have been forwarded to the Liverpool School of Tropical Medicine and to the Royal Society.
I am further to inform you that a set of these papers had already been sent unofficially to Dr. Todd, of the Liverpool School of Tropical Medicine, who, I under- stand, is shortly leaving England to serve on the Commission appointed to conduct investigations on the subject of sleeping sickness in Central Africa.
I
am, &c.,
A. P. MILLAR
Assistant Secretary.
• No. 81.
• Not printed.
PUBLIC RECORD OFFICE
Reference :-
།།། །།
C.O. 885
9 PUBLIC RECORD OFFICE, LONDON
ALLY WITHOUT PERMISSION OF THE COPYRIGHT PHOTOGRAPH-NOT TO BE REPRODUCED PHOTOGRAPHIC-