held above it. Historically, this soot blackening was also used to coat barograph record charts.

Pest deterrent and preservative

Camphor is believed to be toxic to insects and is thus sometimes used as a repellent. Camphor is used as an alternative to mothballs. Camphor crystals are sometimes used to prevent damage to insect collections by other small insects. It is kept in clothes used on special occasions and festivals,

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