Fosbrooke, Henry A.2021-11-082021-11-081961Fosbrooke, Henry A. (1961) British Institute in Eastern Africa: Communications about the possibilities of irrigation, agriculture in rift valleyhttp://41.86.178.5:8080/xmlui/handle/123456789/16323Available in print form, East Africana Collection, Dr Wilbert Chagula Library, (EAF FOS F78)Thankyou for both your letters of December (which arrived while i was in Zimbabwe) and all your kind comments and very useful observations will pass on those concerning irrigation to Bill Adams in Cambridge (whose irrigation summary you read in the recent Azania). He was with me briefly in Sonjo in September and impressed by the continuity of the agricultural and irrigation system from the time of Gray's (not entirely clear or complete) description to the present (ujamaa impact notwithstanding).. He is preparing an exploratory paper (for Africa?) with perhaps a little contribution from myself on the historical background to irrigation agriculture in the Rift Valley and from Tomasz Posnanski, a young anthropologist from Warsaw University, currently at Sussex, who spent some time at Samunge in 1985. We are hoping to do more there late this year and to attempt some more sophisticated measurements of the Engaruka channels, as the obvious follow-up to the recent Azania. At Oldonyo Sambu (Kura) I think I can now see signs of older stone- constructed (Engaruka-type) irrigation canals and field divisions which, if confirmed, will close the gap. geographical as we 11 as historical, between Engaruka and Sonjo. Following your observations, I suspect that the same holds at Sale.I will pass also to Bill Adams the copy of the illustration (based on Thornton) from Kersten of the furrow and flume on Kilimanjaro. It looks not dissimilar to a recent ’improvement’ built (with ’development’ money) to cross back over the river at Kisangiro Sonjo. Bill will also appreciate your sketch and notes of the Kimwani lakeside cultivation. That, and the Botswana example, should fit somewhere into his classification system subject though it is to constant adjustment and elaborationenIrrigation surveyOldonyo SambuIraqTanzaniaArticle