Sift flour, salt, cocoa, and baking powder.
Cream butter, shortening and sugar.
Add eggs, beating well after each addition.
Divide sifted ingredients and milk into thirds.
Add alternately to mixture. Add vanilla.
Bake in 300F for 1 hour and 25 min. in
greased and floured tube or bundt pan.
Test to see if done.
Bake 5-10 min. longer, if necessary.