DISTRIBUTION OF SPORES 



43 



currents or by insects, or, if the pieces of fruit are in 

 direct contact with each other, as is almost always the 

 case when packed, one piece of fruit will directly infect 

 the next and thus start a new center of decay. In this 

 way decay which begins with a single piece of fruit is 



FIG. 24. Another species of Monilia taken from a decaying apple, 

 showing formation of spores. 



sure in a short space of time to extend to the neighbor- 

 ing pieces. From a single decaying apple, infection may 

 spread from apple to apple until a whole barrel speedily 

 becomes decayed and ruined. It is an example of direct 

 contagion. 



A practical suggestion arising from these facts is the 

 wisdom of removing from the vicinity of sound fruits all 



