INDEX. 



Abbe camera lucida, 48 ; arrangement of, 

 49; drawing with, 51; hinge for 

 prism, 52 ; inclined microscope with, 

 50 ; laboratory microscope with, 28. 



Abbe condenser, 19. 



Abbe illuminator, 19; experiments, 20, 

 laboratory microscope with, 28 ; 

 light, axial and oblique, 20 ; mirror 

 with, 20. 



Aberration, chromatic, 4 ; spherical, 4. 



Absorption spectra, 54, 55, 56 ; amount J 

 of material necessary and its proper 

 manipulation, 59; Angstrom and 

 Stokes' law of, 55 ; banded, not given j 

 by all colored objects, 61 ; of blood, ; 

 60; of colored minerals, 62 ; of per- 

 mangate of potash, 60. 



Achromatic objectives, 3, 4 ; triplet, 2. 



Achromatism, 4. 



Adjustable objectives, 5 ; and microme- 

 try, 46. 



Adjusting collar, graduation of, 23. 



Adjustment of analyzer, 63 ; of object- 

 ive, 5, 22 ; of objectives for cover- 

 glass, specific directions, 23 ; with 

 graduated collar, 23. 



Aerial image, 13. 



Air bubbles, 31 ; with central and oblique 

 illumination, 3L 



Air and oil, distinguished optically, 32 ; 

 by reflected light, 32. 



Amici prism, 54. 



Ampl fier, 39. 



Amplification of microscope, 36. 



Analyzer, 63 ; adjustment and putting in 

 position, 63. 



Angle of aperture, 6, 7. 



Angstrom and Stokes' law of absorption 

 spectra, 55. 



Angular aperture, 6, 7. 



Anisotropic, 64. 



Aperture of objective, 6, 7 ; angular, 6, 

 7 ; formula for, 7 ; numerical, 7. 



Aplanatic objectives, 4. 



Apochromatic objectives, 4. 



Apparatus and material, 1, 29, 36, 54, 66. 



Appearances, interpretation, 29. 



Arranging and mounting minute ob- ! 

 jects, 84. 



Axial light, 16 ; experiments, 19 ; with 

 Abbe illuminator, 20. 



Axial point, 6 ; ray, 16. 



Axis, optic, 6, 16. 



Back combination or system of objec- 

 tive, 3, 5. 



Bacillus tuberculosis, 25. 



Balsam, Canada, preparation of, 82 ; re- 

 moval from lenses, 27. 



Banded absorption spectra not given by 

 all colored objects, 61. 



Birefringent, 64. 



Blood, absorption spectrum of, 60 ; or 

 other albuminous material, remov- 

 al, 26. 



Bread crumbs, examination of, 35. 



Brownisn movement, 34. 



Brunswick black, removal from lenses, 

 27. 



Bubble, air, 31. 



Burning point, 2. 



Butterfly scales, 35. 



Cabinet for microscopical preparations, 

 80. 



Camera lucida, Abbe, 48, arrangement 

 of, 49, drawing with, 51, hinge for 

 prism, 52, with inclined microscope, 



Camera lucida, definition, 47 ; Wollas- 

 ton's, 38, 48. 



Canada balsam, preparation of, S2 ; re- 

 moval from lenses, 27. 



Carbonate of lime, pedesis, 35. 



Card, centering, 74. 



Care of eyes, 27 ; microscope, mechani- 

 cal parts, 25, optical parts, 26 ; water 

 immersion objectives, 24. 



Carmine to show currents and pedesis, 



34- 



Catalogs and labels, ink for, 79. 



Cataloging, formula, 79 ; preparations, 



79- 

 Cells, mounting, 71. 



Centering and arrangement of illumin- 

 ator, 19, 20 ; 



Centering card, 74. 



Central light, 16; with a mirror, 19. 



Chromatic aberration, 4; correction, 4. 



Chemical focus, 4 ; rays, 4. 



Cleaning back lens of objective, 27 ; 

 homogeneous objectives, 25 ; mix- 

 tures for glass, 70 ; slides and cover 

 glasses, 66-7 ; 



