DUBLIN MICROSCOPICAL CLUB. 91 



under a low power. It is a pity these specimeas could not have 

 been examined by some observer conversant with objects of this 

 nature, with a view to investigation and identification. 



Eev. E. O'Meara showed a new Pleurosigma from the "Sulu 

 material," description and figure of which he will ere long pub- 

 lish. — He also adverted to an examination (though with a negative 

 result) recently made by him of some earth taken contiguous to 

 an example of the Megaceros hibernicus, obtained from near May- 

 nooth, which is usually found to give a variety of diatoms ; but, 

 in the present instance, he found the earth devoid of all organiza- 

 tion whatever. 



Dr. Richardson showed various instructive preparations of 

 vegetable subjects. 



Dr. E. Perceval Wright exhibited preparations of the anchors 

 and plates of Synapta Beselii, Jiig., which he had taken off Isle 

 Praslin, in the Seychelles, thus adding to the already wide geo- 

 graphical range of this species. One specimen taken was between 

 three and four feet in length, and in locomotion would now and 

 then elongate itself to a still greater length. A coloured figure 

 of this species is given by Schimper. 



Mr. Keit showed some young plants or fronds of Hydrodictyon 

 utriculatum cultivated from original examples obtained from Eng- 

 land. He had obtained forms of two kinds ; first one of irregular 

 network and large-sized cells, and then from these appeared to be 

 subsequently produced ordinary "nets." The fact, so far, did not 

 seem to accord with generally accepted statements ; he hoped, 

 however, to prosecute his experiments, collating his results, and 

 probably have an opportunity to bring the matter before the Club 

 on a subsequent occasion. 



Mr. Archer showed several pretty and interesting forms of 

 " Elagellata," contenting himself just now with the mere exhibi- 

 tion, as their due examination would involve a considerable time, 

 and perhaps many opportunities ; possibly he would, on some 

 future occasion, have the pleasure to draw the Club's attention 

 to the elegant wee things, now under the microscope, more in 

 detail. 



Mr. Archer also submitted some fugitive preparations under re- 

 agents of one or two of his recent Rhizopoda, which seemed to 

 throw some slight additional light on " structure " in these par- 

 ticular forms in question ; but, as the experiments required a 

 great deal of time and patience, as well as repetition, and the sub- 

 jects for examination were often exceedingly precarious to obtain, 

 and, even in comparatively rich material, mostly very difficult to 

 encounter and bring under manipulation, he would defer for the 

 present publishing any further remarks on the points brought 

 forward which would seem to arise from the specimens exhibited. 



