SEA-FISHERIES LABORATORY. 277 



Lancashire Stations, and about a fortnight later at the 

 North Wales ones. 



There are two periods in the year at which the various 

 graohs cross or approach each other closely : about the 

 middle of April and about the beginning of October. At 

 these times the temperature of the sea along the coast of 

 Lancashire and North Wales is ve*ry nearly uniform. 



(3). The data of the periodic hydrographic cruises. 

 These are given in Dr. Bassett's report, but they are 

 also plotted in Charts I to IV, where isothermal lines are 



Jany.Fehy. Mar. Qpri/ May June July Aug. Sept. Oct. Nov. Dec 



Text-Fig. 1. Variations of Sea-temperature at various Coastal 

 Stations in 1912. 



1, Red Wharf Bay ; 2, Off Pt. Lynus ; 3, Gt. Ormes Hd. ; 

 4, Piel Gas Buoy ; 5, L'pool Bar ; 6, Nelson Buoy. 



drawn. On the hydrographic cruises surface tempera- 

 tures are observed, as a very general rule, at points about 

 midway between the regular stations, and also at various 

 coastal stations. The sea-temperature at the surface 



