At this location, the teji^>erature of "Uie vater vaa recorded at three 

 depths, namely at about 2, 12, and 20 ft belov meeoi low vater. As a rule, 

 the tens>erature at a depth of 12 ft vas but 1^ cooler than that at a depth 

 of 2 ft; at a depth of 20 ft It yas the same as that at a depth of 12 ft, 

 thus shoving little -vertical Tarlatlon. 



All*.03 Maudne Borers . 



1. Teredlnldae . Tereflinlflae , Inoludlng Bankla gouldl and Teredo 

 navallB . shoved a moderate amoant of activity In Test Board Vo. 1 and 

 ooousldera'bly more In Test Board Vo. 2. 



a. Test Board Wo. 1 . Terefl1n1dae occurred In only 7 of the 

 1|>1 oodatrbl p^uoels, ranging from minute pits or e!ifl)ryQDlc specimens to ooe 

 Bpeol.men 23 aoi loog; breeding occurred ooQy from the latter part of March 

 to t^ middle of Septeniber. In the test panels of this board, they 

 occurred In 31 of the \\ panels but there vere never more than 75 specimens 

 In any panel, their length rangliig up to 280 moi after 9 months' submer- 

 gence. The attack by Teredlnldae at this location attained peak ratings 

 of moderate in I^M* and 19ii-5; but rated coaly slight In 1946 and 191^7. 



b. Test Board Bo. 2 . Teredlnldae occurred In l6 of the li-l 

 control panels, ranging from minute pits or eabryonio speolaans to Bane 

 vlth a length of 35 sm; breeding occurred only from March through Boreidiar. 

 In the test panels of this board, Teredlnldae occurred In all except 2 of 

 the 1»6, filling or rlddUng a large nuafber, sometimes In as short a period 

 fks \ mooaths. Some specimens vere recorded up to 230 ma In length after 6 

 months « submergence. The attack by Teredlnldae rated very heavy each year 

 ■at the Convoy Escort Base at Borf oik. 



(J6 



