120 
white disc, halfan inch in diameter, became invisible when 
plunged to a depth of from 3 to 6 inches, while a copious exit 
stream, which constantly flowed away from one of the ponds, 
presented the same deep-brown tint. | 
Rev. H. Lloyd, D. D., read a paper on the meteorology of 
Ireland, in reference to the tracks of storms in Ireland, so 
far as the law of their distribution has been determined in Ire- 
land, by means of the simultaneous observations of 1851. 
Mr. D. Moore read a notice of the vine disease in Ire- 
land :— 
<< Tt is a remarkable fact, that two diseases bearing much 
similarity in appearance, and producing equally fatal effects on 
their victims, both previously unknown, should have occurred 
in Europe during the same year, and that they should have 
attacked two species of plants of more importance to the in- 
habitants of these countries, than, perhaps, any other two 
under cultivation, namely, the potato and vine. 
«So far as I can learn, they first appeared in England 
during the summer of 1845, after which they seem to have 
travelled, for some time, at least, in opposite directions, the 
potato disease from the Continent to England, and the vine 
disease_from England to the Continent. It was in a grapery 
near Margate, in Kent, that the mildew first showed on the 
vine, and from thence it spread southward. It does not, how- 
ever, appear that the vintage in France was seriously affected 
before 1848, when the disease began to create alarm among 
the vine-growers in some parts of that country ; but, after that 
period, its spread was rapid both south and north. 
‘In 1851, we hear of it being at Genoa, Naples, and on- 
wards to Portugal; thence to Madeira and Greece, and now 
all the vine-producing countries of southern Europe are said 
to be more or less affected. In England, it continued among 
