Other causes being eliminated, the harmful element of phosphorus alone remains. Compare Jacobson v. Cohen, 244 App. Div. 855, 279 N.Y. S. 750. We think the triers of fact could find, as they did, that the "employe suffered a disability which arose out of and in the course of said employment by reason of becoming afflicted with an occupational disease, more specially phosphorus poisoning or its sequelae."