11 



N. 17° W. 77 miles ; N. 76° W. 62 miles ; S. 66° W. 14^ miles. By the first two 

 methods described above, the direction taken was the initial direction alone, 

 N. 24° E. Owing to this westerly factor in such instances, and the initial westerly 

 direction of many of the fish in other cases, the net resultant passes to the land, 

 or over it. The results are given in the following table : — 



In the case of the adult males, the resultant mean direction ranged from N. 6° W. 

 to N. 60° W. in the different experiments, the former being a line cutting the coast 

 at Milton Ness, a little north of Montrose, and the latter a line running into St. 

 .-Vndrew's Bay to the north of St. Andrews. The mean direction for the adult males 

 in all the experiments was N. 29° W., a line which cuts the coast between Arbroath 

 and Eed Head. The mean direction for the adult females varied in the different 

 experiments from N. 6° E., a Une which cuts the coast a little south of Stonehaven, 

 to S. 82° W., which rmis to the mouth of the Firth of Forth ; and the mean for 

 all the experiments was N. 45° W., a line which touches the coast of Forfarshire 

 between Buddon Ness and Arbroath. The mean hne of migration for the immature 

 of both sexes was N. 77° W., which touches the coast of Fife a Uttle south of Fife 

 Ness. 



(6) Between Elie and Fidra. 



A glance at the migration charts shows that here also the predominant migra- 

 tion was to the northwards, and that comparatively few of the marked plaice were 

 recaptured within the Firth of Forth itself. As is shown in the following table, 

 of 480 of the marked plaice recaptured, about which the necessary particulars 

 were obtained, 102, or 21-2 per cent., were taken within the Firth of Forth, and 

 378, or 78-7 per cent., outside the Firth. Of the latter, 294, or 61-3 per cent, of 

 all recaptures, were found south of Kinnaird Head, that is, south of the Moray 

 Firth ; 51, or 106 per cent., were obtained in the Moray Firth, while 33, or 6-9 per 

 cent., were recaptured still farther to the north or west ; only 18, or 3*7 per cent., 

 were recovered to the south of the Firth of Forth (Lat. 56° N.). 



! Tablu. 



