If it is possible to summarize a summary or review of this nature, then the author is trying to indicate that the plasties industry has settled down from its early turbulent upsurge after World War II and is in a period of steady and sustained growth with its technology well mapped out. Alterations in the range of colorants to cater for it are proceeding though with minor improvements in stability as the goal. The major changes may come about in the methods of colouring and in factory conditions, this being partly stimulated by change of attitude towards health and safety at work; the way in which these changes can happen is now reasonably clear and there should he optimism that the next decade will produce many of the improvements which can currently be seen to be needed.
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