With Plate 11)Soft rot of wood is caused by certain species of Ascomycetes and Fungi Imperfecti. The fungal hyphae typically run spirally in the central zone of the secondary xylem walls, where they give rise to cavities with pointed ends.The fungi causing soft rot are cellulose-attacking species which initiate attack in the less heavily lignified parts of the walls of the wood elements. The rate of attack is increased when inorganic nutrient salts are added to the wood.Under laboratory conditions Chaetumium globosum can cause severe decay of hardwoods.

Objectives-To establish the reasons for clinical complaints, complainants' feelings about the original incident, and their motivation in complaining. Design-Postal questionnaire survey.

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