354 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



crude sewage from the old outfall sewers. I am assured 

 that it is the intention of the Borough Council gradually 

 to connect up the private sewers opening into these main 

 outfalls with the main sewerage system. Already the 

 Queen Street and Calton Terrace sewer systems are in 

 hand, and soon these will be discontinued. There remain 

 then the Midland, Thornton Road and Bare sewer systems. 

 These deliver the sewage from property equivalent to 

 about 200 houses, say 1,000 persons, less than 10 per cent, 

 of the estimated population. This sewage is not included 

 in the present purification systems. When it is ultimately 

 so included, there is no doubt that the present degree of 

 risk would be largely minimised, perhaps practically 

 removed. 



3. — Report on an Examination of the Mussel Beds 

 in the Estuary of the Conway. 



On August 15th,. 1906, a preliminary report was made 

 to the Scientific Sub-Committee on a bacteriological 

 analysis of two samples of mussels sent to me from the 

 estuary of the Conway. It was, however, considered 

 desirable that a more exhaustive analysis and 

 inspection should be made, and on October 

 17th Dr. Jenkins and I visited Conway for the 

 purpose of seeing the mussel beds. We were 

 accompanied by Dr. F'raser, Medical Officer of Health for 

 the Carnarvon Combined Sanitary Districts, Professor 

 White, of Bangor University College, and Mr. R. Jones, 

 the Fishery Officer in charge of the District. On this 

 occasion we saw most of the sewer outfalls, and also 

 collected samples of mussels from various places, where 

 men and women were working. Samples of water from 

 the river were also taken. It was found impossible to 

 finish the inspection on that day, and on October 26th 



