iii TRANSACTIONS LIVERPOOL BlOLOGtCAL SOCIETY. 



(1) The Mussel Beds at Port Madoc. (Plate I.) 



These particular beds have been attended to from 

 time to time. I first visited Port Madoc in November, 

 1906, when I took samples and made analyses; and a 

 further inspection was made by Dr. Bulstrode and myself 

 in 1908. No report, however, has yet been made with 

 regard to this area. The mussel fishery is not one of 

 great importance, and those engaged in it work, for the 

 most part, casually, in the intervals of other kinds of 

 employment, or as a temporary change from idleness, 

 or want of employment. The industry is not an 

 organised one, as it is at Morecambe or Conway, and it 

 has hardly been necessary to report upon it. But from 

 the point of view of the closer regulation of the whole 

 shellfish industry of Cardigan Bay an inspection became 

 necessary during the present year. 



Mussels are found oveT most parts of the harbour 

 at Port Madoc and in the estuary near Borth. The 

 shellfish in the harbour are not large ones, but those 

 found at the bottom of the channel, near Borth, are large 

 and well-nourished fish. 



Most of the sewers discharge into the upper parts 

 of the harbour. A certain amount of sewage (No. 1 on 

 the chart) flows down a small stream which enters the 

 harbour well above the lock gates, and to the west of 

 the latter. This stream also receives the sewage dis- 

 charging from the Chapel Street sewer, and representing 

 a population of about 2,000 persons. Normally, this 

 sewage flows, at low water, through a small channel in 

 the mud in the upper part of the harbour, but higher up 

 than the Gasworks there is a bye-pass leading into a 

 small brook through which sewage from Outfalls Nos. 1 

 and 2 may enter the Glaslyn River to the east of the 

 lock-gates. There is another outfall, No. 4, on this side 



