This volume is based on papers presented at the International Symposium on X-Ray Microscopy held at Brookhaven National Laboratory, Upton NY, August 31-September 4, 1987. Previous recent symposia on the sub ject were held in New York in 1979, Gottingen in 1983 and Taipei in 1986. Developments in x-ray microscopy continue at a rapid pace, with im portant advances in all major areas: x-ray sources, optics and components, and microscopes and imaging systems. Taken as a whole, the work pre sented here emphasizes three major directions: (a) improvements in the capability and image-quality of x-ray microscopy, expressed principally in systems attached to large, high-brightness x-ray sources; (b) greater access to x-ray microscopy, expressed chiefly in systems employing small, often pulsed, x-ray sources; and (c) increased rate of exploration of applications of x-ray microscopy. The number of papers presented at the symposium has roughly dou bled compared with that of its predecessors. While we are delighted at this growth as a manifestation of vitality and rapid growth of the field, we did have to ask the authors to limit the length of their papers and to submit them in camera-ready form. We thank the authors for their con tributions and for their efforts in adhering to the guidelines on manuscript preparation.

Bradt's Azores is the only comprehensive guidebook to the nine-island archipelago, a nature-lovers' wilderness perched at the western extremity of Europe in the mid-Atlantic, and one of the best places in the world for whale watching. Thanks to the experience of expert botanist and author David Sayers, and the ongoing involvement of author Murray Stewart, the book retains a depth of knowledge about flora and fauna and continues to provide the strong geological and botanical information that is so integral to getting to know the islands. This new edition has been thoroughly updated and also has an expanded focus taking in the land- and sea-based activities which have become a significant part of Azores attractions in the past few years. In Bradt's Azores, full background and practical information is complemented by a region-by-region breakdown and nine chapters - one per island - to provide all the details needed for a successful visit. There are also 29 maps and separate sections on language and the islands' flora. This new edition includes details of Ponta Delgada's new 5-star hotels and Santa Maria's new round-island walk, plus a full update on the accommodation upgrades that have taken place in recent times. Information about new waymarked walks is also covered, plus new bike-hire and whale-watching companies. The Azores attract geologists, bird-watchers, whale-watchers and anyone who loves nature in all its forms. Mountaineers can head to Pico island to climb Portugal's highest peak. The Azores' volcanic origins make for a rugged, diverse landscape, a suitable backdrop for excellent walking, mountain-biking or canyoning. A geological curiosity, a nature-lover's paradise and - more recently - a mid-Atlantic adventure playground, the Azores have become increasingly accessible in recent years. Despite the increase in visitor numbers, though, they retain an authenticity, a genuineness which in most places remains true to its roots. Safe and welcoming, the islands are drawing in a whole new group of visitors, mainly from Europe and the USA, attracted by the diversity of outdoor activities, easier accessibility and improvements to the visitor infrastructure.