Aberdeen Fisher ij Statistics. 



27 



south of Shetland, as Fig. 15 sliows, in 1909 and 1910. But on our 

 Eastern areas, XXIIL, and XXIX., they have shown a marked and 

 almost steady increase dming manv vears, and were markedlv abun- 

 dant in 1911," 1912, and 1913 (Figs. 11, 19). 



TABLE X. 



Average Monthly Catch of Large and Small Lemons, in Cwts.. per 

 100 Hours' Fishing, Aberdeen Trawlers, 1903-13. 



Large lemons show a certain amount of diminution in the Shetland 

 area (X.) of recent years (Fig. 14). as compared with the years 1904-07. 

 But in Areas XIV., XXIIL, and XXIX.. from Shetland southwards 

 to the Firth of Foi'th, our curves give the impression of remai'kable 

 steadiness, the seasonal waves of abundance recm'ring year after year 

 in an almost symmetrical fashion. In Area XIV. (Fig. 16) there is a 

 tendency to drop in the last years of our series, and in Area XXIII. 



