EUROTIUM. 



295 



with a needle, and note the gonidia which are easily de- 

 tached and float in the air as a fine cloud the gonidio- 

 phore remains after the shaking, and the gonidia are 

 evidently not enclosed in a gonidangium, as was the case 

 in Mucor. 



Mount some of the ma- 

 terial in a drop of water, 

 and note (1) the myce- 

 lium, consisting of sep- 

 tate hyphae, with the 

 cross-walls at rather long 

 intervals ; (2) the stout 

 non-septate gonidio- 

 phores, each with a dense 

 terminal cluster of gonidia 

 some of which will have 

 become detached and will 

 be seen in the water. The 

 roughly spherical clusters 

 are not easy to make out, 

 especially as the project- 

 ing gonidia entangle air be- 

 tween them: draw under 

 the cover-glass some alco- 

 hol, or mount a fresh por- 

 tion in a mixture of water 

 and alcohol the commo- 

 tion set up by the mixing 



of the water and alcohol will detach some of the gonidia 

 and also clear away the air-bubbles. 



Now note that the head of the gonidiophore is swollen 

 up (but not cut off by a cross-wall) and bears numerous 

 chains of gonidia ; with the high power, note that the head 

 gives off peg-like radiating outgrowths, the sterigmata, 

 and that each sterigma has budded off a chain of gonidia, 

 the smallest (youngest) gonidia being at the base of the 

 chain and the largest (oldest) ones at the end. The ter- 

 minal gonidia are being continually abstricted as they 

 become rounded off, and therefore very loosely attached to 

 the next ones below in the chain. 



MYCELIUM 



Fig. 62. EUROTIUM. Part of the Myce- 

 lium, with a Gonidiophore. 



