"PREFACE: This volume is a compilation of API toxicological studies performed on petroleumbased materials. The entries for the studies are organized by the category of test sub stances (gasoline and gasoline streams@ middle distillates@ lubes@ heavy fuels@ solvents@ shale oils@ miscellaneous products and oxygenates). Within each entry@ information is included about the test performed@ the species tested and the test results. For some studies@ an abstract number for the study is given@ corresponding to the number appearing in the Index and Abstracts to Reports and Other Publications of HESD or the APILIT database. For other studies@ a TR number or API Publication number is given. When ordering a report for a study referenced in this publication (see below)@ please furnish either the appropriate (1) abstract number @ (2) the API Publication number or (3) the TR number of the study. For those studies that are incomplete or the final report is not available at the time of publication@ the phrase ""Data on File"" will appear. Each year@ updated entries (pages) will be made available to purchasers of this volume. The updates to Results of Toxicological Studies will be provided at a nominal cost."