93 PROCEEDINGS OF SOCIETIES. 



20t]i July, 1871. 



Mr. Crowe presented a number of active living examples of 

 microscopic life under his instrument, moving in healthy vivacity, 

 rotatoria, infusoria, volvocines, &c., &c., forming a highly inter- 

 esting and attractive field of observation for the section of the 

 meeting to whom the '* marvels of pond life " were but little 

 known. 



Dr. J. Barker mentioned he had been experimenting still farther 

 with his new paraboloid for higher powers, and stated he had 

 found good results from having its upper surface ground convex ; he 

 hoped to have an opportunity of showing this modification ere 

 long on his large stand (which of course he was unable to fetch 

 with him), the fittings being unadapted for others. 



Kev. E. O'Meara showed Campy Iodise us diplostictus from the 

 Sulu material ; as he was preparing an account of the diatoms from 

 this source, amongst others, for separate publication, he would 

 refrain from expatiating thereon here. 



Mr. Archer drew attention to a minute exceedingly elegant form 

 of Phacus, so far as he could find out, certainly not identical with 

 any described, which was taken amongst several other pretty things 

 from certain ponds some miles from Tralee, on the Dingle rqad. 

 This was in figure most like Phacus longicaiida, though never 

 twisted, but quite different therefrom in its not being prolonged 

 posteriorly nearly so decidedly into a spine-like " tail," and 

 especially in the superficies on both sides being beautifully marked 

 by convergent longitudinal rows of darkish dot-like granulations ; 

 •' eye-speck " posed considerably to one side, and the point whence 

 emanated the flagellum was not indicated by the superposition, or, 

 as it were, overlapping, of two rounded lobe-like -portions of the 

 " leaf-like " body, but only by a mere concavity. The dimensions 

 of this very elegant little object were, length y^^, and greatest 

 breadth -y^-g-Q, thus very nearly, if not quite, the most minute 

 form referable to Phacus. However, Mr. Archer thought it would 

 be desirable to be in a position to point to a figure of this little 

 form, ere venturing to give any more full description, and would 

 hope to refind it on some future occasion. 



Mr. Archer would have directed the Club's attention, had time 

 permitted, to yet another example, in addition to others lately 

 pointed out by him, of motion without (visible) motory organs, in 

 certain humble forms of organisation in which this had (he 

 thought) not been noticed, though well known, of course, in many 

 other cases, such as Bacteria, Diatoms, &c. &c. The present case 

 was that of a minute algal organism, like the little reddish form 

 adverted to by him and shown at the Club Meeting of 26th Jan., 1 871 

 (' Quart. Journ. Micros. Sci.,' vol. xi, n. s., p. 311), but not at all 

 identical therewith. This was found in the same gathering yielding the 

 new Phacus above alluded to. So insignificant a little affair, indeed, is 

 the present, that but for its movement, — a rolling, wavering, 



