422 PROCEEDINGS OF SOCIETIES, 



with a strong carmine solution and then clarified in oil of clove, 

 and finally mounted in Klein's Dammar fluid. In this section, as 

 well as indeed in ail taken from this cord, the arrangement of the 

 gray matter and the central canal were very clearly demonstrated. 



Professor McNab gave some details of his examination of the 

 ''vegetable hair " (brought forward by Dr. Frazer at last night of 

 meeting) now much used for the manufacture of " chignons," and 

 forming a beautiful glossy "hair," capable of being dyed any 

 (fashionable) colour; Dr. McNab, however, had arrived at the 

 conclusion that this was produced from the " New Zealand flax," 

 the fibres being used in the rough, the finer portions not being 

 eliminated. 



Mr. Archer showed, for the first time detected in this country, 

 (Edoc/onium Arescliongii (Wittrock), showing both forms of 

 fructification nicely developed ; he also showed QSdogoniitni 

 aerosporum (de Bary) with both forms of fructification now found 

 in two or three situations in Ireland, but this very singular form 

 is always seemingly very scanty in its occurrence. 



Mr.ArchershowedexamplesoftheplanthehadnamedZ)/(3!^_^05;?7?<g- 

 rium constrictum (' Quart. Journ. Mic. Soc.,' vol. xiv (n. s.), p. 127), 

 though he thought it possible this might really be found to possess 

 a closer relationsliip to CosmoclacUum (Breb.) than to Z)/e^_yos^;7i<^- 

 7nii,m (Niig.), though characterised on a single in place of a double 

 stipes ; this is at least a most marked and constant form though 

 rare ; the mode of vegetative growth of the cells is, like that of a 

 desmid, by interposition of a two new halves between the older 

 and a new stipes appearing for eacb new cell, thus causing a 

 bifurcation of the stipes, but an opportunity to observe this 

 seldom presents itself, 



Mr. Archer showed the conjugated state of a minute diatom 

 which Mr. O'Meara identified as Coceonema cijnibiforme for the 

 first time seemingly seen in that condition, but which, however, 

 presented no novel feature ; here were two new frustules twice 

 the linear dimensions of the empty parent valves, the whole 

 involved in a common mucous envelope. 



21tli June, 1872. 



Dr. Moore showed Peziza oemginosa found on decayed oak ; 

 he remarked that wood so infected, on account of its shining 

 bluish-green colour, was used for inlaying for ornamental pur- 

 poses at Tunbridge Wells. 



Eev. E. O'Meara presented from the Sulu material, already so 

 rich in diatomaceous novelties, a further new Navicula to be 

 named, in compliment to Dr. Moore, Navicula Mooreana, of which 

 due description would subsequently appear. 



Mr. Archer exhibited examples of the Cylinclroci/stis detected 

 by him some years ago at Upper Lough Bay (' Quart. Journ, 

 Mic, Soc.,' vol. xiv n. s., p. GO), and never yet found elsewhere, 

 the present examples from the same site showing now the con- 

 jugated state, for which, though he had repeatedly searched, he 

 ipl()^J[)een successful enough to meet with. There 



