Handbook Of Photomicrography Book

Direct Colour Photomicrography - PREFACE - THIS Handbook is the outcome of a series of articles originally published in the Photographic Monthly and intended as an introduction to photomicrography from a photographers point of view. In this volume the subject has been approached from its two aspects, with descriptions of both photographic and microscopic technique, and it is hoped that experts in either field will look with indulgence on an elementary treatment df the subjects with which they are familiar. At the same time, however, the probesses are discussed in sufficient detail to be of use in research, for which the full possibilities of the combination of microscop y 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 investigations. In the preparation of some of the more specialised portions, 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 and C. T. Holford, and . Rlessrs. L. Archbutt, G. H. Broom, and R. Lyon. Their thanks are also due to manufacturers and their representatives for the loan of valuable apparatus and of blocks for many of the figures in the text. Several of the illustrations are from photomicrographs of objects procured from slide-lendiLg libraries. Access to slides which have been mounted by specialists is invaluable for practice in photomicrography and for the study of objects otherwise unobtainable, but the worker is strongly recommended to make his own preparations whenever possible. As a help in that direction the methods adopted in preparing some of the objects illustEated in the plates are described. In conclusion we must recognise with thanks the great care and courtesy with which the Publishers have always met our wishes in regard to the illustrations and general arrangement of t, he book. H. L. H. November, 1913. CONTENTS CHAPTER PAGES I. PHOTOMICROGR AP A P P A H RA IC T US . 1-24 Horizontal cameras - Vertical cameras - The workroom-Prevention of vibration. 11. THE MICROSCOPE . 25-46 Essentials of a photomicrographic stand-Descriptions of typical microscopes. 111. OBJECTIVES A ND EYEPIECES . 47-82 Defects and correction of lenses-Types and properties of objectives-Eyepieces-Magnification. IV. LAMPS A ND ILLUMINA . NTS 83-101 Suitability of various radiants for photomicrography-Description of lamps-Selection of an illuminant. V. CONDENSERS . 102-113 Collecting lenses-Substage condensers. VI. EXPERIMENT O S N ILLUMINA TIOP . 116126 Critical IighLExperiments with condensers and microscope-Use of the auxiliary condenser. VII. Low POWE P R H OTOMICROGRA . PHY . 127-141 Photography of small solid objects--Transparent objects-Telephoto lenses...Read More