128 Journal of the Mitchell Society [February 



of another pair of conjugating filaments, in which the points are in- 

 dicated as in figure 1. Figure 3 is a microphotograph of the pair 

 of filaments diagrammed in figure 1. This is a water mount. Figure 

 4 is a microphotograph showing the differences between the ends of 

 the cells. 



The phenomenon occurs freely in the •collected material and 

 seems to be natural. The writer has made no attempt at explanation 

 of the cause. However, efforts were made to germinate the spores 

 formed but they were unsuccessful. The failure to germinate was 

 most probably due to laboratory conditions. 

 Durham, N. C. 



