SEA-FISHERIES LABORATORY. 261 
plotted above and from H. to S.S.E. below, while the lower 
axis has from N.N.W. to W. above and from W.S.W. to 
5. below. ‘The intensity of the wind at each observation 
is shown by the length to which the line is plotted, one 
unit signifying “light,” two “fresh,” three “ strong,” 
and four “a gale.” A spell of calms, or a storm, a tract 
of continuous winds from one direction, or the shifting of 
re Cr 
a6 
ewe w f & 
Jan Feb. Mar Ahr May June Joly Avg Sept. Oct Nov. Dec 
Fic. 6. Diagram ‘showing average haul of Plankton per month in 1507, 
the wind from one quarter to another can all be readily 
traced by the eye on these diagrams. For example, the 
south-easterly storm about Christmas 1907, the long calm 
in the easterly quarter from June to August 1907, and 
the changing of a hght N.H. wind in the morning, to 
S.H. in the afternoon are noticeable. 
Turning now to the plankton records for these two 
years, the monthly averages as shown in the two diagrams 
figs. 6 and (¢ will be useful for comparison with the 
