Some Questions which they Suggest. 5 



In addition to these threads there are the small round 

 spores. In these threads we have come upon a very 

 characteristic structure in these little organisms ; it is 

 found in the sporangia of most of them but in very 

 varying forms, and very diversely arranged, of which we 

 shall say more hereafter. This system of hairs in the 

 sporangia is known as the capillitium. 



Fia. 2. Badhamia utricularis, broken Sporangia 

 showing Capillitium. 



As the sporangia contain spores it will be at once under- 

 stood that we stand on the threshold of a new genera- 

 tion, and we must now follow the history of the spores. 

 These, when carefully looked at, are seen to be covered 

 with minute spines, and thus present a somewhat rough 

 appearance. 



If now the spores be placed under favourable circum- 



