of the Fishery Board for Scotland. 



77 



bye law of the Salmon Fisheries (Scotland) Act, 1868, the centre of the 

 mouth of the river has to be determined, I desire to state that in referring 

 to the bye- law in question (B) it seems to me that the intention of the 

 Salmon Commissioners has been to have the measurements made at the 

 time when the lowest tide occurred. 



The Equinox of this year occurs at 1.39 a.m. on the morning of 21st 

 March, and the first spring tide after the Equinox — the time when the 

 Sun enters Aries — occurs at the time of New Moon on the 30th March. 



In view of the fact, however, that the tides on the east coast of Scotland 

 flow late as compared with the actual times of New or Full Moon, it 

 seems to me that if my interpretation of the intention of the Salmon 

 Commissioners is correct, the proper time to measure off the limits of 

 the Bervie estuary is when the extreme of rise and fall of tide occurs. 

 This maximum rise and fall occurs at Leith on 1st April, high water 

 being at 3.11 a.m. 



Low water at Leith on 1st April will therefore occur at 9.21 j a.m. 

 The correction for Bervie being the difference between times of high 

 water at Leith and Bervie — a correction which no doubt you will be able 

 to ascertain — should be subtracted from the 9.21 as the figure for Leith 

 to obtain the time when, it seems to me, the Bervie measurements should 

 be made. — I am, Sir, your obedient servant, 



W. L. Calderwood, 



Inspector of Salmon Fisheries 

 for Scotland. 



Arthur Dickson, Esq., 

 Montrose, 



Clerk to Bervie District Fishery Board. 



