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The article presents research into an association between the carcinogen 20-methylcholanthrene and salivary gland transplants. Particular attention is paid to determining if there is any similarity to findings with tooth germs transplanted with polycyclic hydrocarbon carcinogens. Results found salivary gland homotransplants treated with 20-methylcholanthrene survived in the brains of guinea pigs for a period of 10 to 30 days, after which a number of animals became moribund and died.

This article presents information on moth balls or naphthalene. Magazines and newspapers recommends mothballs be spread about on lawns and particularly around shrubbery to discourage trespassing by wild and domestic animals. However, moth balls do present a potential hazard to young children playing in a yard. They may be attracted by their color, odor, and size and eat them. Those with G6PD enzyme deficiency are at risk, of a severe attack of hemolytic anemia from the naphthalene.