FRUITING OF MOLDS 



PLATE I 



PLATE II 



FIG. 1 8. Plates exposed to the air before and after 

 sweeping, showing the abundance of mold spores 

 in the air. The upper plate was exposed before 

 sweeping, and contains one mold; the lower after 

 sweeping, and contains numerous molds. Each 

 was exposed for one minute. 



