PROCEEDINGS OP SOCIETIES. 



Dublin Miceoscsopical Club, 

 April l^th, 1872. 



Eev. E. O'Meara brought forward a new Navicula to be named 

 N. (licurvnta, of which description and figure would hereafter 

 appear. 



Dr. Macalister showed a good mounted specimen of his new 

 Adenopleura compressa, the subject of a communication in a 

 previous number of this Journal. 



Dr. John Barker exhibited an adaptation by him of a one- 

 inch objective to his small microscope asa " searcher," as proposed 

 by Dr. Iloyston Pigott, which performed in the present instance 

 very well, giving large amplifying power with great clearness. 

 Dr. Barker's ultimate aim was, however, its adaptation to a 

 binocular microscope, as he conceived two low power objectives 

 (say one-inch) could be brought to bear on the object and the 

 amplifying power attained by the use of the searcher, one in each 

 body. 



Dr. Moore showed further specimens of the same little alga 

 (brought forward at the Pebruary meeting) from the tanks in 

 Botanic Carden, which continued flourishing as before, these 

 specimens seeming still to sustain the views propounded thereupon 

 on the previous occasion. 



Dr. McNab showed sections made through the flattened disc of 

 the glandular hairs oi Ampelopsis Yeitchii. 



Dr. Eichardson exhibited some exceedingly beautiful slides 

 elegantly mounted by Mr. C. Baker of the anchors and scales of 

 Synapta and of the spicules of Hijalonema mirahile, or glass- 

 rope sponge, the latter showing the cruciform, biclavate, spiral- 

 cylindrical and multihamate spicules. Dr. Eichardson also showed 

 some nice mountings, by Dr. Battersby of various eyes of flies, 

 forming very handsome objects. 



Mr. Archer showed a minute alga, very probably the same 

 thing as the Cijlindrocapsa nuda, Eeinsch, in his work ' Die 

 Algenflora des mittleren Theiles von Pranken ' (pp. 66, 67, t. vi, 

 f. ii). This was certainly a form he had not before met with; 

 the chief difterences in the present examples from Prof. Eeinsch's 

 plant consisted in the hyaline investment, wrapping the cells 

 around more closely than that author depicts it, and in the 

 contents forming a continuous parietal layer, with a central clear 

 space, not equally diff'used, as appears in Eeinsch's' figure. 



Mr. Archer showed the seemingly rare little animalcule 

 Basydytes goniathrix (Gosse). This he had seen on only a few 

 previous occasions, but had not before an opportunity to exhibit 

 it at a Club meeting. A casual observer might possibly look at 

 the present examples and suppose the form common, confounding 

 it with its relatives in the genus Cheetonotus. If time had 

 permitted, Mr. Archer would have sought out and drawn attention 



