32 
Saprolegniee, which were of great interest, and contained at least 
one new to science. 
On Tuesday, the 20th of September, Powerscourt demesne was 
visited, but only a few species of interest were collected, and these 
included Polystictus Wynnei B & Br. and Marasmius Hudsoni Pers. 
The Club dinner was held in the evening at Russell’s Hotel, under 
the presidency of the Acting President, Mr. Charles B. Plowright, 
M.D., who subsequently delivered his presidential address in the 
Lecture Theatre of the Royal College of Science, entitled, “ Notes 
and comments on the Agaricini of Great Britain” (see p 37). 
On Wednesday, the 21st of September, the morning was spent in 
working at the herbarium and on determining the consignments of 
fungi which then came to hand from all parts of Lreland and from 
some parts of England as weli. In the afternoon a search at 
Brackenstown, near Swords, was made, where Flypocrea splendens 
Ph. & Pl. Rosellinia mammeformis P., Nolanea pisciodora Cesati, 
Poria vitrea Pers. and P. obducens Pers. were found. At the even- 
ing meeting a very valuable paper was read on behalf of our member, 
Mr. Harold Wager, F.L.S., Inspector of Science to the Department 
of Science and Art, on “A fungus parasite on Euglena,” wherein he 
recorded that the reproduction of Polyphagus euglene Schroet. is 
effected under normal conditions by the production of sporangia 
from the central or main portion of the organism. The nucleus and 
protoplasm pass into this sporangium, and the nucleus then divides 
first into two, then four, eight, sixteen and so on until about 128 
nuclei are produced. Around each nucleus a small portion of the 
protoplasm collects ; these masses become rounded off ; each becomes 
surrounded by a membrane and thus 128 cells are formed, each of 
which is a spore. Each spore possesses a single cilium, and when the 
_ Sporangium bursts the zoospores move away freely, and after a lively 
swim of about one hour or so, they settle down and soon develop into 
adult forms similar to the parent. ‘This process of Zoospore formation 
is completed in about 12 hours from the time when the sporangium 
commences to form on the parent cell. When the supply of healthy 
euglene begins to diminish owing to the repeated attacks of the 
parasite, the latter begins to produce its resting spores (Zygospores or 
zygotes), ‘These are produced as the result of a simple sexual fusion 
of the contents of two cells. A rhizoid from a somewhat small cel] 
comes into contact with a large celled individual, and there swells up 
into a thick walled projection of a spherical form. The nucleus and 
protoplasm, both from the small cell and from the large cell, pass into 
this thick walled cell and there ultimately fuse together to form a 
uninucleate resting spore. This spore then remains in a quiescent 
state until again brought into a suitable environment when the thick 
