118 TBANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



150 miles in thirty-one days ; and bottle No. 1 , set free at 

 the Liverpool Bar on September 30th, was picked up at 

 Shiskin, Arran, about 165 miles off, on November 12th. 

 On the other hand, a bottle (J. F. 34) set free on November 

 7th, in the Eibble Estuary, was picked up on November 

 12th at St. Anne's, having only gone 4 miles. 



We have not considered it necessary to give the par- 

 ticulars of every bottle that has been set free and after- 

 wards recovered, but we have divided up our district into 

 eight convenient areas in each of which a sufficiently 

 large number of bottles has been set free, and the following 

 table shows our results for these areas : — 



A HE A, 



No. 



SET FREE. 



No. 



RECOVERED. 



Apparent Direction or Dpi ft. 



West of I. of Man 



84 



33 



West and North, mostly to Ireland. 



East of I. of Man 



115 



29 



Northward, mostly to Wigtonshire. 



Central area 



104 



26 



North-east, Cumbd., & N. Lane. 



North Wales 



71 



28 



Mostly North-east. 



Mersey area 



173 



95 



24 N., 16 "VV., rest washed ashore. 



N.W. Lt. Vessel 



96 



41 



26 to North, 15 to West. 



Kibble area 



137 



72 



Half N. & N.E., rest ashore. 



Morecambe B. & North 



107 



40 



Mostly N.E. and E. (ashore). 



It may be doubted whether our numbers are sufficiently 

 large to enable us to draw very definite conclusions. It 

 is only by the evidence of large numbers that the vitiating 

 effect of exceptional circumstances, such as an unusual 

 gale, can be eliminated. Prevailing winds, on the other 

 hand, such as would usually affect the drift of surface 

 organisms, are amongst the normally acting causes which 

 we are trying to ascertain. Mr. W. E. Plummer of the 

 Bidston Observatory has kindly given us access to his 

 records of 'weather for the last twelve months, and we 



