The kingdom includes the yeasts , molds , smuts , and mushrooms .
这一界生物包括酵母、霉菌、担子菌和蘑菇。
In 1917 gen. jan smuts predicted , " the day may not be far off when aerial operations with their devastation of enemy lands and destruction of industrial and populous centers on a vast scale may become the principal operations of war . "
But even on windless days the air always smelt of something under-earth : sulphur , iron , coal , or acid . And even on the christmas roses the smuts settled persistently , incredible , like black manna from the skies of doom .