INDEX 



Abbe camera lucida, 7 1 



,, condenser, 26 

 Achromatic condenser, 27 



,, object glasses, 76 



Acineta, 131 



Adjustable patch -stop, 33 

 Adjustment, focussing, 18, 93 



,, of vertical illuminator, 41 



Amoeba, 126 



Angle of aperture, 14, 16, 17 

 Aperture, 14, 15, 16, 17, 77 

 Apochromatic object glasses, 83 

 Apparatus for holding objects, 60 



,, sundry, 67 



Base of microscope, 92 

 Beck binocular, 107 

 ,, compressor, 57 

 „ glass trough, 56 

 Bench metallurgical microscope, 119 

 Binocular, Abbe, 108 



„ Beck, 107 



„ illumination with, 111 



,, optical path. 111 



„ Powell and Lealand, 108 



„ resolution with, 110 



„ short tube, 112 



„ Wenham, 107 



Biology, best object glasses for, 90 

 Blood counts, 68 



„ films, 64 

 Body of microscope, 8, 93, 103 

 Botany, best object glasses for, 91 

 Box for Sloan object glass changer, 21 



,, live, 57 

 Bull's-eye condenser, 24, 38 

 Bythotrepes, 133 



Camera lucida, 69 



„ photomicrographic, 74 

 Case of apparatus for holding objects, 



68 

 Cedar-wood oil, 17 

 Cells, 65 

 Cements, 58 

 Centrifuge, 63 



Centring of dark -ground illuminator, 34 

 ofhght, 22 



,, of object glass, 21 



,, of rotating stage, 52 



,, of substage condenser, 29 

 Ciliata, 129 

 Circular stage, 52, 120 

 Cleaning cover glasses, 54 



Cleaning object glasses and eyepieces, 



76 

 Coarse adjustment, 18, 93 

 Collecting net, 66 

 Colour screens, 42, 81 

 Concave mirror, 23 

 Condenser, Abbe, 26 



,, achromatic, 27 



bull's-eye, 24, 38 



,, for dark -ground illumina- 



tion, 27, 33 



,, immersion, 28 



,, substage, 24, 26 



„ use of substage, 28 



Cone of illuminating light, 27 

 Conjugate images, 78 

 Construction of eyepieces, 14 

 Convergent light, 23 

 Compressor, 57 

 Cork holder for objects, 67 

 Correction collar, 81 



,, for cover glass, 79, 80 



„ of object glasses, 78 



Counting blood corpusc'es, 68 

 Cover glass corrections, 79, 80 



,, „ thickness, 16, 63, 64 



Cross-lines in eyepiece, 73 

 Cultiire plates, 62 



Dark -ground illuminator, 34 



Depth of focus, 18 



Diameter of eyepieces, 88 



Diatom periodic structure, 26 



Difflugia, 127 



Dimensions of microscopes, 96 



Direction of light, 22 



Dirt on lenses, 76 



Dissecting instruments, 73 



Divergent hght, 23 



Double wedge light moderator, 32 



Drawing table, 7 1 



,, with the microscope, 69 

 Drawtube, 14, 93, 103 

 Dry mounted objects, 36, 58 



Electric lamp, 46 

 Entomostraca, 133 

 Erecting eyepiece, 73 

 Eyepiece, 11, 13, 15, 88 



compensating, 89 



erecting, 73 



for photography, 89 



Huyghenian, 89 



micrometer, 68 



142 



