In accordance with API's policy of providing the federal government with copies of research designed to determine whether any chemical substance or mixture manufactured, processed or distributed by API member companies may cause risk of injury to health or the environment, we are enclosing copies of the following reports: (Identification number not yet assigned). 28-Day Dermal Toxicity Study of API 83-12 (hydro treated light naphthenic distillate; CAS No. 64742-53-6) in the Rabbit. Draft report from Tegeris Laboratories, Inc.; and (Identification number not yet assigned). 28-Day Dermal Toxicity Study of API 83-19 (light alkylate naphtha; CAS No. 64741-66-8) in the Rabbit. Draft Report from Tegeris Laboratories, Inc.