82 JAMES MURRAY 



to be a Heliozoan (Acanthocystis ?). The spines are all of one kind, and they are few 

 in number and of clavate form (Plate VIII. , Fig. 23). 



Microscopic Plants. The Algae, the majority of which are microscopic, will be 

 reported upon in a separate paper. 



Bacteria. Many kinds abounded in the lakes in summer ; but in this group it is 

 impossible to discriminate between native and introduced kinds. 



Organisms of Doubtful Position. Many organisms occurred, of whose nature 

 we had no guess. Certain of these are figured on Plates VII. and VIII. Perhaps 

 the sight of these sketches may suggest some of their names to other naturalists. 



Acinetaria. No tentaculiferous Infusoria were definitely recognised, but while 

 these pages are in the press, Mr. A. W. Sheppard, F.R.M.S., has identified the 

 organism figured on Plate VII., Fig. 19, as the encysted condition of a species of 

 Podophrya. 



