PREFACE 



THIS Handbook is the outcome of a series of articles 

 originally published in the Photographic Monthly and in- 

 tended as an introduction to photomicrography from a 

 photographer's point of view. In this volume the subject 

 has been approached from its two aspects, with descrip- 

 tions of both photographic and microscopic technique, 

 and it is hoped that experts in either field will look with 

 indulgence on an elementary treatment of the subjects 

 with which they are familiar. At the same time, how- 

 ever, the processes are discussed in sufficient detail to be 

 of use in research, for which the full possibilities of the 

 combination of microscopy and photography are scarcely 

 yet realised. 



In a handbook devoted to general processes and 

 methods it is impossible to give an adequate account of 

 the many uses of photomicrography in technology and 

 industry, but an attempt has been made to indicate 

 briefly some of its main applications. Many, perhaps 

 equally important, have necessarily been omitted. The 

 methods described may, however, be applied by any 

 worker with the microscope to his own particular investi- 

 gations. 



In the preparation of some of the more specialised por- 

 tions, for reading of proofs, and for valuable suggestions, 

 the authors have to acknowledge the kind help of several 

 friends, in particular Mr. E. Collier Green, Drs. N. S. Finzi 



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