332 Wager. — On the Presence of 
this body as well as the nucleolus left in each nucleus are 
precisely similar in size, so far as could be made out by 
observations on different basidia, to the nucleoli of the 
original nuclei before their fusion, supports this view. These 
are the archoplasmic bodies. They become completely 
separated from the nuclei, and in some cases removed to some 
little distance from them. We have now in the basidium two 
nuclei, each with one of these archoplasmic bodies in contact 
with it. Sometimes they are placed in front of each nucleus, 
sometimes behind. They gradually lose their red colour and 
stain only blue (Fig. 6). 
The two nuclei now fuse together to form one large 
nucleus (Figs. 7 and 7 a). The archoplasmic bodies remain 
separated for some time, but finally undergo fusion as 
described in a previous part of this paper. The nucleoli 
remain for a short time separate from one another, but they 
soon fuse together also, and we have then in the basidium 
a single large nucleus, to which is attached the archoplasmic 
body. 
EXPLANATION OF FIGURES IN PLATE XVII. 
Illustrating Mr. Wager’s paper on Centrospheres in Fungi. 
C. Archoplasmic body (Centrospliere). 
Cs. Centrosome. 
N. Nucleolus or remains of nucleolus. 
All the figures have been drawn with the help of the Camera lucida and the 
apochromatic, 2-o mm., 1.4 apert., object-glass of Zeiss and ocular 18. 
Fig. 1. Piece of hypha from a gill, with two nuclei; no nucleoli visible; the 
chromatin coloured red. 
Fig. 2. Young basidium without nuclei ; numerous vacuoles present. 
Fig. 3. Young basidium with two nuclei, which have probably just passed in 
from the hyphae. The structure of the nuclei similar to those in Fig. 1, but 
the nucleoli are just visible as small, faintly stained bodies. 
