382 Prize for Collection of Fresh-water Crustacea.  [Sess. 
the apices of these filaments that the zoospores are produced, 
and through the orifices of which they escape when ripe. 
Bryopsis,a marine genus growing upon rocks in tide-pools, 
forming green, feathered, silky tufts from one to four inches 
high. 
On the concluding evening of the active work of the session 
a demonstration on microscopical manipulation, showing the 
correct lines on which the illumination of objects under the 
microscope should proceed, was given by Mr West. This 
demonstration was much appreciated by the members. 
PRESENTATION OF PRIZE FOR COLLECTION 
OF FRESH-WATER CRUSTACEA. 
AT the evening meeting of April 23, 1902, Dr Sprague and 
his daughter, Miss B. Sprague, were presented with the 
prize awarded to them for the excellence of their collection 
of fresh-water Crustacea. The prize took the form of the 
following volumes: ‘Cladocera Sueciz’ and ‘ Copepoda,’ by 
Prof. Lilljeborg, and ‘State Report on the Entomostraca of 
Minnesota. Mr James Russell, Vice-President, who occu- 
pied the chair, in making the presentation spoke of the 
gratification it gave the Council to recognise, as they now 
did in this tangible form, the value of the work which 
had been done by Dr and Miss Sprague in this difficult 
branch of Natural History. Dr Sprague, owing to the state 
of his health, was unable to be present, but was represented 
by his son, Mr Ernest Sprague, who, on receiving the volumes 
above-mentioned, read a communication from Dr Sprague, 
expressing the pleasure which he and his daughter had 
experienced in their search for, and study of, these minute 
creatures, and of the stimulus they had received in their 
work from the encouragement held out by the Council in 
their offer of a prize. The whole proceedings in connection 
with the presentation were of a most interesting nature, 
