202 
G. S. West and Clara B. Starkey. 
b. Filaments of the terrestrial form placed in (M per cent. 
Knop’s solution ultimately showed a fragmentation of the filaments 
similar to that which occurs when the filaments are placed in water, 
but the fragmentation was delayed much longer. 
c. Filaments of the terrestrial form lived in a very healthy 
condition in a 0 f 2 per cent, glucose solution, notwithstanding the 
fact that there was a considerable growth of fungi in the medium. 
On the subsequent transference of these filaments to water there 
was at first no change, but after an interval of two months many of 
the filaments had fragmented. 
d. Aplanospores were produced on one occasion in filaments 
of the terrestrial form which had been placed in the dark for a 
few days after having been grown on agar containing (H5 per cent. 
Knop’s solution. 
Fio. 4. Zygnema ericetovum from a warm stream in Dominica, W. Indies 
(described in 1894 under the name of Z pachydermum). ^ A and B, fixed and 
stained examples to show nature of chloroplast ; C-E, aplanospores. dpi. 
aplanospore ; n, nucleus; ^.pyrenoid. A and B, x 1477, C-E, x 738. 
