^6 The Irish Naturalist. March, 



bacteria. Whether these represent the beginniiii^^s of the shot-holes 

 or not must be decided b}- further observations The specimens came 

 from uearEuuiskillen. 



C. F. Bai^I, exhibited a parasitical fungus, J\.hytii)iia salidnnni, growiug 

 upon the leaves oi Salix repots. It was found near Portmarnock, and has 

 previously been recorded for Ireland only from Munster. This 

 Rhytisma forms a thick., shining, black, crust-like stroma on the surface 

 of the leaf. A transverse section showed the fructification, consisting 

 of asci crowded together with paraphyses on a disc similarly to the 

 Sycamore Leaf Blotch {Rhytisma accrinum) ; the leaves of the host with 

 fungus attached fall to the ground in autumn and there remain until 

 .spring, when the asci develop spores which continue the life of the 

 fungus. 



F. ^\^ Moore showed Tuhe)-cularia ^-Esadi, found growing on a 

 species of ^-Esculus (Pavia). This fungus, said to grow on decaying 

 bark, seemed to extend to the sound bark beneath the diseased portion. 

 It is very prevalent on species of .5j^sculus and Pavia in the Botanic 

 Gardens, Glasnevin, and spreads rapidly over considerable patches of 

 bark. 



Dr. McArdle exhibited Scapania intermedia, Husuot, a minute liver- 

 wort which partakes of the characters of S. purpurea. Hook., anci of S. 

 iimbrosa, Schrad. Though rose-coloured and a pretty object, it never 

 assumes the high colour of the former, from which it differs in the acute 

 antical lobe of the leaf, and from S. nmbrosa it is separated at once by 

 the rotund postical lobe. In cell structure it much resembles S. purpurea. 

 It always grows on dry rocks, while the latter is found in wet places, and 

 frequently on rocks which are often submerged. Its distribution in 

 Ireland is rather restricted ; it is recorded from Co. Tipperar}-, Co. 

 Donegal, and Co. Antrim. In England it has been foTind at Eskdale in 

 Yorkshire by Mr. Slater, and the Abbe Lamy gathered it in ravines about 

 Mont-Dore in France. The specimens exhibited were collected on cliffs 

 at \Vindy Gap near Castlebar, Co. Mayo, by Dr. W. Lang of the 

 Glasgow University in September, 1902. 



DUBLIN NATURALISTS FIELD CLUB. 



January 16.— ExcuksiONTO Lakelands Park (Terenure College).— 

 A number of members and visitors assembled at 2 o'clock at Terenure, 

 they walked at Lakelands, where, under the conductorship of A. H. 

 TopriN, they studied the natural history of the district. The Park con- 

 tains fine specimens of many trees, which were carefully examined. The 

 Rev. Father Dunne, who has for several years past been stocking the 

 lake with trout, gave a demonstration of the methods in use for hatch- 

 ing the eggs and rearing the young fish until large enough to be set free. 

 The party returned to town at 4.30. 



January 19. -Annual General Meeting.— The chair was taken by 

 the President (Dr. G. H. Pethybridge). The Honorary Secretary 

 (J. do \V. HiNCii) then read the Report for 190S, which .showed that, 



