1 Introduction

The first edition of the CADARS reporting data published up to 1979, appeared in 1981 (Fracassini & Pasinetti 1979; Fracassini et al. 1981b), and was installed in the CDS catalogue service as cat. II/61. Preliminary comments were reported by Fracassini et al. (1981a). Since then, a large amount of data appeared in the literature, many of them obtained from the modern interferometric techniques. The second edition, completely revised and updated, was CDS catalogue II/155 (Fracassini et al. 1988; Pastori et al. 1988) and was reported in "Selected Astronomical Catalogues", vol. 2, CD-ROM, ADC, NASA. Third edition, installed as CDS cat. II/224, consists of 13573 records, more than twice the number of the first edition. Actually, the number of available data is higher as for many stars both the apparent diameter and absolute radius are given. Moreover, data obtained by the same author in different wavelengths are also given in the remarks. The records concern the results obtained from different methods for 7778 stars, including stars of the Magellanic Clouds and two neutron stars.