100 BUREAU OF AMERICAN ETHNOLOGY [Bull. 184 
herds and flocks, and they have been encouraged to cull out inferior 
females. Some Sia have adopted elastrators for docking and castrat- 
ing sheep instead of using the knife. And ‘‘many Sias vaccinate for 
blackleg in cattle and sleeping sickness in horses.” ‘The quantities 
of pigs and chickens raised is inadequate, says the report; more could 
be raised with the Sia’s resources and more should be to improve their 
economy and diet. 
