Over the last dozen years there has been a great development in the study of matter on the micro-scale by means of the light microscope, which has coincided with the rapid growth of auto mation and the use of computers. The manufacturers have responded to this challenge, and there is now available a large choice of modules for use with the microscope, both on the biological and non-biological side. This book is on microscope photometry. Photometry on the macro-scale can be applied to features of not less than about one millimetre in size. Below this lies the realm of microscope photometry...