170 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Only one bottle was washed ashore during September. 

 This bottle (No. 70, Station VII) was found on the 4th off 

 Harlech, after three days of off-shore winds. Its later appear- 

 ance might possibly be due to local conditions in Tremadoc 

 Bay, which forms a cul-de-sac where the flood and ebb runs 

 practically at right-angles to the beach. 



The remaining bottles, fourteen in number, were all 

 recovered on the Irish coast during dates included in 5th-20th 

 October. Nine of the bottles were beached on a twenty-six 

 miles stretch of coast between Malahide, Co. Dublin, and 

 Dunary Point, Co. Louth. These nine bottles represent 

 Stations II, III, IV, V, VI and VIII ; none belonged to Station 

 VII, which was nearest the Irish coast. Again, as with the 

 bottles stranded on the Welsh coast, stations from all parts 

 of the line contributed. 



Considering the period August 27th to October 5th we 

 find that from the grounding of the last bottle in August, until 

 the date of recovery of the first bottle in Ireland, the winds 

 were as follows : — 



Holyhead — 



The wind blew from an easterly quarter 18 more days than it did from 

 a westerly quarter. 



The wind blew from a northerly quarter 16 more days than it did from 

 .a southerly quarter. 



Dublin {Phoenix Park) — 



The wind blew from an easterly quarter 9 more days than it did from 



a westerly quarter. 

 The wind blew from a northerly quarter 4 more days than it did from 



a southerly quarter. 



If the period is extended to October 18th, the day on 

 which the last of the nine bottles was found, there is practically 

 no difference in the general direction of the wind. Surface 

 drift due to wind, then, would be to the westward and south- 

 ward. These bottles were recovered during a period in which, 

 on the whole, there was a prevalence of off-shore winds. The 



