To the Editor .—After I had been in practice for several years, I noted several patients with similar lesions, ie, epidermoid cancer of the larynx and who had common denominators in their working environment: (1) all dealt in horticulture; (2) three out of four were nonsmokers; and (3) all were exposed to insecticide sprays causing severe irritation to the throat. Other patients along with these overt cancer patients were several cases of parakeratosis of the larynx in this horticultural environment. This is a rather high incidence in one practice of possible insecticide implication in the etiology of cancer of the larynx. However, it would be of great interest to know if other ENT specialists have had like findings. The Editorial Board of the Archives invites its readers to submit letters to the Editor, which should be written in a constructive manner. A copy of the letter will be sent to