A process for making artificial silk by nitrating cellulose and injecting the nitrate solution into water, thereupon regenerating the cellulose: [C6H7O2(OH)3.n [C6H7O2(ONO2).n In the original process the cellulose nitrate itself was used as the fiber (hence its satirical description as mother-in-law silk). The regenerating agent is ammonium hydrosulfide