il4 The Irhh NaturaHsi- J"ue, 



Fungus, Pestalozzia Giiepitii. This is the parasite known as the " Grey 

 Blight " of the tea-plant, a pest which has done considerable damage 

 to tea-plantations in Assam. On germinating, the conidia rapidly grow 

 and enter the tissues of the leaf where large quantities of mycelium 

 develop, breaking up the cell walls, and choking the vessels, until 

 considerable patches of dead tissue are forme J. These patches are grey 

 in colour. This fungus has been foun 1 on leaves of cameUia, 

 rhododendron, and other exotic genera in Europe. 



J. N. Halbert exhibited two nymphal forms of a freshwater mite 

 Protzia eximia from streams on Kilmashogue Mountain, County Dublin. 

 In one of these the provisional genital area is of the usual four-disked 

 type common amongst immature forms of the family Limnocharidae. 

 The second nymph has ten discs, resembling in this respect the nymphs of 

 Thyas curuifrons, a species recently described by Dr. Walter from 

 Switzerland. The genus Protzia is a stenothermal form occurring only 

 in rapid streams in highland districts. 



CORK NATURALISTS' FIELD CLUB. 



November 26. — Professor I. Swain conducted an excursion to Carrig- 

 rohane (the first winter excursion ever undertaken by the Cork Club) 

 for the purpose of studying the " river -terraces " of the Lee. Alighting 

 at the station, the party went to the bridge, from which point a good 

 view of the two lower terraces could be obtained. Here a general sum- 

 mary of the geology of the Old Red Sandstone and Carboniferous forma- 

 tions were given, and an explanation of the crumpling that succeeded 

 Carboniferous times, and the denudation that removed the limestone 

 from the hills, together with the dirtcrcntial weathering that left sand- 

 stone exposures as hills, and carved out valleys in the limestone areas. 

 The reason why the river flowe.l over the Carboniferous shales instead of 

 over the limestone was also given. Terrace-formation was next dealt 

 with ; beginning with the most recent, edging forward into the concave 

 side of the stream just below, where the water was more quiet, it was 

 seen that new terraces were formed as the river deepened its bed. so that 

 the higher terraces are the older ones. Walking back to Cork, terraces 

 Nos. 3 and 4 were seen from the huw leading up to Carrigrohane Bridge, 

 and nearer to Cork a fine Boulder-clay deposit was investigated, and striated 

 stones were obtained. 



January 30. — The Presidential Address — " The Geology of the South 

 of Ireland," was delivered by Professor I. Swain at University College. 

 Dr. A. W. Sandford preside 1. and there was a large attendance of 

 members and their friends. The lecture was illustrated by a fine series 

 of lantern slides. 



March 29. — F. R. Rohu delivered a lecture on " Our Native and 

 Migratory Birds," which was illustrated by a number of stutted specimens, 

 at the School of Art. Professor Hartog presided. A short discussion 

 followed the lecture. 



