SHAPE OF THE SPOEES. Vl 



of spherical fangi on their mycelium, or spawn, 

 as they are here accurately drawn from some 

 specimens given to the artist, Mr. Leonard, 

 for that purpose. The group below shows 

 the fungi magnified 375 diameters, while the 

 single spore above is magnified 1,000 diame- 

 ters ; and the thread of mycelium is also mag- 



Single spore magnified ^A^Q^i tO the SamC extent. 



1,000 diameters. « ■,, •, 



Small as these spores 

 are, they are much larger 

 than those of the uredo se- 

 getum. When a spore has 

 been magnified 1,000 dia- 

 meters, it has been seen by 

 some microscopists to emit 

 a cloud of sporules, but so 

 small that no definite forms 

 could be distinguished. 

 The mycelium is remark- 

 ably well shown in these 

 diagrams ; and every per- 

 son who examines this 

 fungus \rith an eighth- 

 of-an-inch achromatic, may 

 very readily see the pedi- 

 Gr'Ji7^vredofcetida ccls by which the spores 



magnified 375 diameters. r^j.g attached tO it. 



