18 



April 30: Latitude 48° 00' N., longitude 52° 16' W., and again on May 2, lati- 

 tude 47° 37' N., longitude 52° 15' W. 



April 30: Two bergs, latitude 47° 57' N., longitude 52° 31' W., again on May 

 3, latitude 47° 36' N., longitude 52° 29' W. 



May 1: Latitude 47° 58' N., longitude 50° 36' W., and again on May 3, lati- 

 tude 47° 47' N., longitude 50° 39' W. 



May 2: Latitude 46° 22' N., longitude 49° 00' W., and again on May 5, lati- 

 tude 45° 32' N., longitude 49° 45' W., as large growler. 



May 2: Latitude 47° 48' N., longitude 50° 58' W.; latitude 47° 45' N., longi- 

 tude 50° 58' W., and again on May 3, latitude 47° 45' N., longitude 50° 53' W., 

 considered largest berg on Banks. 



FOURTH CRUISE, "MODOC," MAY 8-23 



The Modoc relieved the Tampa at 2.40 p. m., May 8. The ocean- 

 ographic party was received on board, the transfer being effected in 

 a moderate sea with a dense fog. Upon relief the Modoc proceeded 

 to search for the position of the southernmost ice in evidence on that 

 date. Station No. 37 was taken on May 9, but no Arctic water was 

 found. After a delay due to fog the berg was sighted on May 10 

 at 4.05 p. m. It was recognized as berg No. 7. Shortly thereafter 

 another berg was sighted close by. Station No. 38 was taken along- 

 side of the first one. Arctic water was found at depths of 50 to 175 

 meters, showing that the cold water current had again started to 

 flow and that it was this current that was bringing the bergs outside 

 the 100-fathom curve down the eastern edge of the Grand Banks. 

 Position was held in the vicinity of this berg and its drift observed 

 from time to time as clear weather permitted observation until the 

 morning of May 20. On May 11, 14, and 15 experiments were car- 

 ried out with mines and by gunfire. On May 14 station No. 39 was 

 taken. This showed no Arctic water. Dense fog was encountered 

 on May 16 and 17 and part of 18. The vessel was hove to and drifted. 

 On the afternoon of May 18, while in a dense fog, innumerable ful- 

 mars were noticed close by the vessel. The fog lifted at 2.45 p. m. 

 and a berg was observed 4 miles away. Stations Nos. 40, 41, and 

 42 were taken, showing fairly warm water except at station No. 40 

 at depths of 50 and 125 meters and station No. 41 at a depth of 40 

 ^ .jiictpfs, where Arctic water was found. Further mining experiments 

 ,.f '■..■■•'•<p:6re 'Earned out on May 19 and 20. On the morning of May 21 a 

 * "i ,<.;A ^eaCQli ' of the area was made and two bergs were sighted, one in 

 vT/-."'''.."l'atituck;44° 41' N., longitude 48° 41' W., and one in latitude 45° 

 '>\ V y. ;tP4'-'N^ longitude 48° 39' W. Station No. 43 was taken on May 21. 

 X*: .-;-No -Aroii-^/'kvater was found. The remainder of the cruise was de- 

 !- - ,% . Yotesd. -tV Seai-ching for and tracking the southernmost ice. On May 22 

 ''■;^' ^.^tl|e -l^i-cncli barkentine Terra Neuve was spoken and her position 

 '^'J^^f^rni^ed. The Modoc was relieved of the patrol by the Tampa at 

 10 a. m., May 23, in latitude 44° 54' N., longitude 53° 03' W. 



