text: Nevertheless certain distinctions between the groups remain. In general the Hamites are lighter in complexion than the Negroes. Among the former, animal breeding is more frequent than among the latter, and conversely the Hamites appear less interested in agricultural pursuits than do the Negroes. The list of such comparisons between Hamites and Negroes, as well as between Negroes and Bushmen, could easily be extended. It might be well, however, to point out that there are environmental factors which cannot be ignored in any evaluation of the cultures of the different ethnic groups of Africa.  
  The Pygmies live in the dense forests of central Africa where both agriculture and animal breeding are difficult, if not impossible. Thus their economy, based on food gathering and hunting, has been determined by the habitat into which they were required to move by the expanding Negroes. And so it is also with the Bushmen. Whatever their aboriginal culture may have been, once they were driven into the Kalahari desert of South Africa they were forced to abandon it and had to survive by hunting and food gathering in a region which hardly afforded more than the bare necessities for survival.