562 
BULLETIN OF THE BUKEAU OF FISHEBIES 
(p. 626), suggests that it is not only a regular annual event but that the inflow from 
this source is comparatively uniform, both in volume and in temperature, from year 
to year. Its chilling effect on the surface temperature certainly extends northward 
along the Nova Scotian slope of the gulf as far as the neighborhood of Lurcher Shoal, 
where the whole column of water in 90 to 140 meters was about 0.4° colder on May 
10, 1915 (station 10272), than on April 12, 1920 (station 20101) — just the reverse of 
the seasonal change to be expected. 
Fro. 31.— Mean air temperature (solid curve) and vfater temperature (broken curve) in Lubec Narrows, for 10-day inter- 
vals from July 1, 1919, to June 30, 1920 
It is much to be regretted that no data are available for May for the region from 
Cape Sable out across Browns Bank, the Eastern Channel, or the eastern end of 
Georges Bank. Lacking such, I can not outline the effect of the Nova Scotian cur- 
rent in this direction. Probably, however, icy water from this eastern source over- 
flows Browns Bank at some time during April or May, perhaps the eastern end of 
