SEA-FISHERIES LABORATORY. 169 
structed from the daily temperature records supplied by 
the Meteorological Office. Only the readings at 4 p.m. 
are considered. ‘Ten-daily averages throughout the vear 
have been calculated. In the curves these are further 
smoothed by taking the averages of each three ten-daily 
periods. The values, therefore, represent thirty-daily 
averages, taken every ten days. In this way the minor 
fluctuations are eliminated, and the curves indicate the 
annual changes of sea temperature influenced by the 
larger variations peculiar to the year 1907. 
| Table on next page. 
