Summary his book was written primarily for people who intend or wish to develop new machines for the output of typefaces. It is practical to categorize equipment into three groups for which digital alphabets are required - 1) display devices, 2) typesetting machines and 3) numerically controlled (NC) machines. Until now, development of typefaces has been overly dependent upon the design of the respective machine on which it was to be used. This need not be the case. Digitization of type should be undertaken in two steps: the preparation of a database using hand-digitization, and the subsequent automatic generation of machine formats by soft scanning, through the use of a computer-based program. Digital formats for typefaces are ideally suited to system atic ordering, as are coding techniques. In this volume, various formats are investigated, their properties discussed and rela tive production requirements analyzed. Appendices provide readers additional information, largely on digital formats for typeface storage introduced by the IKARUS system. This book was composed in Latino type, developed by Hermann Zapf from his Melior for URW in 1990. Compo sition was accomplished on a Linotronic 300, as well as on an Agfa 9400 typesetter using PostScript. v Preface Preface his book was brought out by URW Publishers in 1986 with the title "Digital Formats for Typefaces;). It was translated into English in 1987, Japanese in 1989 and French in 1991.

The geologie term "'Tethys" introduced by Eduard Suess (1893) into Reience waR originally a paleogeographic one. Since its original des- eription it has been used in various ways. One of them is Tethys as a paleo-biogeographie eoneept. This eoneept was adopted for IGCP Project 262, Tethyan Cretaeeous Correlation. It was proposed by G. CSASZAR and Heim; A. KOLLMANN and has been approved by the IGCP Board in February 1987. The projeet haR its aimH primarily in the improvement of the stra- tigraphie cOl'relation between the heterogenous faeies of the Tethyan realm. The requests to paleontology in this programme are of variouR kindH: The delimitation of the Tethyan realm in spaee and time needH a dear statements on the eomposition of Tethyan faunal 01' floral assem- blages. Riozones based on various fossil groups have to be eRtablished fOI' biostratigraphie eorrelation. Finally, Tethyan bioprovinees have to be established. TheHe problems have been diseussed in a special meeting of the palaeontologieal group of the projeet whieh was held on January 25-27, 1988, in Vienna. Papers presented at this meeting are published in this volume. Heinz A. KOLI.MANN 1. Cretaceous Tethys versus Mesogee Xew Aspects on Tethyan Cretaceous Fossil Assemblages. Band 9 Schriftenreihe der Erdwissenschaftlichen Kommissionen der Osterreichischen Akademie der Wissenschaften. 15-33.