V. 



MUCOR MUCEDO, Fres. 



I. If a slice of bread be soaked in water, and kept 

 under a bell-glass, various moulds will make their 

 appearance upon it : about the fourth or fifth day there 

 will be seen a mould, which at first appears white and 

 flocculent, producing long unbranched stalks, which 

 terminate in round heads, white at first, and subse- 

 quently becoming black : this will be Mucor Mucedo. 

 It may also be obtained on horse-dung kept under a 

 bell-glass, and on various other substrata. 



II. Remove a very small piece of the bread bearing 

 the mould, and tease it out gently in water : mount and 

 examine under a low power : note 



1. Relatively thick, non-septate hyphae, which ramify 

 in the substance of the bread. 



2. Relatively thin branches, which are produced from 

 the thick ones, and themselves, branching repeatedly, 

 produce a very extensive system of minute fibrils. 



3. Hyphae similar to (1), which however grow erect in 

 the air (gonidiophores), each bearing at its summit 

 one spherical sporangium : this will certainly have 



