BIGELOW: EXPLORATIONS IN THE GULF OF MAINE. 



79 



densities for Stations 6 and 5 with those of 45 and 46 it is evident that 

 vertical stabiHty in ]Massachusetts Bay decreases with the advance 

 of the season; pointing to the inversion which no doubt takes place 

 there in winter. 



A profile from Boston (Station 6) northeastward to German Bank, 

 via Jeffrey's Bank (Station 25), and Station 31 (fig. 37) shows the 



Fig. 36. — Curves of density in situ at .Stations 7, 27, 35, 43. 



relative distribution of lighter and heavier water over the northern 



part of the Gulf. Above the two deep basins heavy water, distin- 



^guished arbitrarily by the curve of .020, rose close to the surface, 



W'hereas over the two banks the whole column of water was of lower den- 



