228 ‘Observations on Brefeldia maxima, Rost. 
Zi 

Fig. 5.—A portion from zone C Fig. 6.—Spore formation com- 
(fig. 1), showing a more advanced plete. A little later appearance of a 
stage. The division of the nuclei is portion as shown in fig. 5. 
complete, and the protoplasm has 
finally broken up into uninucleate 
masses which will eventually form 
the separate spores. 
fixed material, it is evident that division of nuclei for spore 
formation, takes place about twenty-five to twenty-seven 
hours after development begins. As in other species of my- 
cetozoa which have been examined, the protoplasm, just before 
nuclear division, breaks up into more or less rounded masses, 
in this case of considerable size, [the capillitium has been formed 
a considerable time previously]; while a vertical section shows 
well marked vertical spaces between the masses. These, as 
also the spaces round the central columella, possibly facilitate 
the passing out of the excess water downward. (See figs. I-6). 
Large masses of plasmodium of the species appeared again in 
November, 1915, this time, from a third stump, also ash, about 
thirty yards higher up the valley again. It would almost seem 
that the species is making a regular progression from stump to 
stump. 

. 03S 
We have received the Eighty-second Annual Report of the Natural 
History Literary and Polytechnic Society issued by the Bootham School, 
York, which shows that the Society still keeps a keen interest among its 
scholars in Natural History matters. There are illustrations of wasps’ 
nests and also of the title page of the manuscript Naturalist of 1834, which 
appeared in this Journal some little time ago. 
Naturalist, 
