210 Dublin Microscopical Club. 



Seedling Nepenilies. — Prof, M'Nab exhibited a young seedling 

 Nepenthes grown in the Royal Botanic Garden, Edinburgh, and 

 given him by Mr. Lindsay. The root was long and unbranched. 

 The pair of cotyledons was distinctly visible, and, in addition, the 

 plant bore four small leaves, each transformed into a pitcher with 

 simple lid. The cotyledons produced numerous longish woolly 

 hairs. In the pitchers the glands were visible, being much deve- 

 loped in the third and fourth leaf, merely indicated in the first and 

 second. A very marked feature in the stracture was the presence 

 of wide spiral tracheae in the pitcher and its wings and also in the 

 cotyledons. In the fourth pitcher the remains of a small apterous 

 insect were observable. In another minute pitcher, i inch long, 

 from another seedling, the remains of a small red spider were visible. 

 At the side of the pitcher the spiral trachides were well developed in 

 the wings, and apparently ended close to stomata, probably water- 

 stomata, on the upper margin. In the body of the pitcher the spiral 

 trachides sometimes ended in close proximity to the gland. In 

 another pitcher, about \ inch long, the hairs on the margin of the 

 lid were distinctly glandular. These frequently exhibited a central 

 spiral, and in one case, when the " tentacle,"' suggesting that of a 

 Brosera, had been broken across, the uncoiled spiral was shown. 

 Many minute brown hairs were scattered over the whole external 

 surface. 



Gonium tvetras exliihited. — Mr. Archer showed in a living condi- 

 tion the form named Gonium tetras, distinguished from G. jiectorale, 

 much more common, by its having but four, not sixteen cells, in 

 each coenobium, and by these being more elongate towards the 

 aspect whence issue the flagella. 



Section of Foot of foetal Ox. — Prof. D. J. Cunningham exhibited 

 a transverse section throngh the middle third of the foot of a foetal 

 ox, which illustrated the muscular origin of the suspensory liga- 

 ment of the fetlock and the particular factors which enter into its 

 formation. 



Clicetocladium Brefeldi exhibited. — Mr. Greenwood Pirn showed 

 Cha'todadium Brefeldi, a remarkable mould which occurred in 

 considerable abundance on a small flower-pot. The fertile hyjjha 

 usually branches into three principal divisions, each terminating in 

 a long spine, whence the name, but at each side giving rise to 

 dichotomous branches, on which are borne bodies which formerly 

 were considered to be conidiospores (the form being referred to 

 Botri/tis), but, according to Van Tieghem and Le Monnier, they are 

 one-sporcd sporangia. There seems to be some doubt on the point, 

 as Erefeld, at least some years ago, does not seem to have seen the 

 extrusion of the spore. 



February 21, 1884. 

 Micrasterias hrachijptera, Lundell, collected in Westmoreland hi/ 



