Berthelot, [51]
Bessemer converter, [17], [49], [69], [210]
Bismarck, [136]
Black Death in England, [124]
Blackie, [1]
Blame, Mrs. Emmons, [183]
Blanchard, inventor, [95]
Blue Ridge Mountains, [2], [36]
Board of Trade, none in Chicago when Cyrus H. McCormick came, [70]