slightly higher than in preceding and succeeding periods without chlorination, the fluctuations in the values for individual samples were so great that differences between the averages are of doubtful significance.
Other factors
From the factory records daily averages throughout the campaign were obtained for each of the following values ; in pulp water, purity* of diffusion juice, purity* of first carbonatation juice, climinationt and " battery loss " (expressed as a percentage of beet sliced).
There tvere widc fluctuations in the daily average values for sugar content of pressed pulp, for sugar content of pulp water, for purity of the juice, and for elimination, both during periods of chlorination and during control periods, but Chlorination did not appear to make a consistent and significant difference in the level of any of these values. The effect of chlorination on battery loss could not be assessed with any certainty from the data obtained.
The effect of chlorinationonthemoisture content ofcompressed pulp was, however, more marked. The daily average value throughout the campaign is shown graphically in Figure 5.
During each period of chlorination the moisture retained in the pressed pulp tended to be higher than during periods without chlorination. This appears to be due to the fact that the pulp was less easily compressed as the pt1 value rose.