This appendix is based, with permission, on my sections in the new International Tables for Crystallography, Volume C (editor A. J. C. Wilson, 1991).

There are text-books which concentrate on almost every diffraction geometry. References to these books are given in the respective sections in the following pages. However, in addition, there are several books which contain details of diffraction geometry. Blundell and Johnson (1976) described the use of the various diffraction geometries with the examples taken from protein crystallography. There is an extensive discussion and many practical details to be found in the text-books of Stout and Jensen (1968, 1989), Woolfson (1970), Glusker and Trueblood (1971, 1985), Vainshtein (1981) and McKie and McKie (1986), for example. A collection of early papers on the diffraction of X-rays by crystals involving, inter alia, experimental techniques and diffraction geometry, can be found in Bijvoet, Burgers and Hägg (1969, 1972). A collection of recent papers on primarily protein and virus crystal data collection via the rotation film method and diffractometry can be found in Wycoff, Hirs and Timasheff (1985); detailed references are also made to this volume later.

In this appendix which deals with monochromatic methods, the convention is adopted that the Ewald sphere takes a radius of unity and the magnitude of the reciprocal lattice vector is λ/d.