Table 4. Sonic depths- -number and geographic position of sounding- -Concluded 



^Sounding velocity of 1508 meters per second assumed. ^ Beginning of oceanographic station 3. 



c End of oceanographic station 3. "^Doubtful. ^Probably shallow. f Sounding continuously for 5 



minutes. Course southwest true at 7 1/2 knots. gSounding continuously for 11 minutes. Course SxW 



1/2 W true at 5.7 knots. hsynchronism poor. 



293 



