SOUTH AFRICAN ASSOCIATION. 21 



Later still there will be called in the services of the chemical engineer, 

 ever engaged in problems of research to ascertain the most advantageous 

 processes of converting raw materials into manufactured articles. In all 

 these tasks it is the South African engineer who has, under the conditions 

 of an undeveloped land, built up a technique and practice suitable to 

 African requirements and showing promise of wider applicability, that 

 we may well expect to assume a position of leadership and of inspiration. 

 These are some of the ways in which Science can respond to the challenge 

 of Africa. 



The picture which I set out to portray I have now completed. I have 

 tried to suggest something of the magnitude of the rewards which Africa 

 has in store for the scientist who has the enterprise to adventure and 

 the vision to see. I have sought also to be the medium of the challenge 

 presented to Science by Africa's opportunities and needs. It is a vast 

 canvas on which I have had to work. On it I have drawn but a few 

 sketchy outlines. Yet I hope that the vision stands out clear. I hope 

 that I have said enough to convey the power of its inspiration. Not 

 least do I hope that you, our visitors, will play a great part, in the time 

 that you will spend with us, in filling in some of the details of the picture, 

 and in quickening and vitalising its message for the scientists of South 

 Africa. It is to them chiefly that it makes its appeal. The development 

 of Science in Africa, of Africa by Science — that is the Promised Land that 

 beckons them. I believe that they will not be disobedient to the vision. 



