482 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Water Analyses — 



A number of samples of water from Barrow Channel, 

 from the end of the Ferry Slip, were made in May, 1908, 

 at various states of the tide. The results are as follows : 



Nos. of intestinal bacteria in 2 c.c. of water — 



5 hours before high water — Sterile. 



3 „ „ —1. 



1 „ „ —o. 



6J hours before low water — 0. 

 4i „ „ —0. 



2\ „ „ —200. 



\ „ „ >1000. 



Conishead Priory Mussel Bed. 



13 June, 1912. 



Sample of mussels taken direct from the bed. 

 Five mussels emulsified in 250 c.c. of sterile water. 

 1 c.c. of emulsion = 



(0-02 mussel) contained 6 intestinal bacteria. 



11 



21 



24 



Mean No. of intestinal bacteria per mussel = 770. 



Summary of results of recent mussel analyses 



Locality. 



Mean No. of 



ntestinal bacteria 



per mussel. 



Lune Estuary, Crook Shear 

 „ Bazil Point 



Morecambe, Bare AjTe Point 



Conway, near Bridges 



„ near Deganwy 



Wyre, near Fleetwood 



Conway, near Morfa 



Conishead Priory 



Heysham, " Little-out " Shear 



Wyre, at Wardley's 



Roosebeck Scar 



Morecambe, Stone Shear 



Wyre, at Wardley's 



Wyre, near Fleetwood 



Roosebeck 



6,500 

 3,700 

 3,100 

 2,200 

 2,150 

 1,650 

 1,300 



770 



600 



600 



310 



300 



125 

 66 

 l/10th of a mussel 

 was sterile 



