9 6 



INDEX. 



Prism of Abbe camera lucida, 49-50 ; 

 Amici, 54 ; comparison, 57 ; dispers- 

 ing, 54 ; Nicol, 62 ; reflecting, 57 ; 

 and slit of micro- spectroscope, mu- 

 tual arrangement, 56. 



Projection ocular, 9 ; designation of, 10. 



Pumice stone for pedesis, 34. 



Pushing in draw-tube, 18. 



Putting on cover-glass, 74; an object 

 under microscope, 11. 



Q-R 



Quinine, Herapath's method of deter- 

 mining minute quantities of, 85. 



Ray, chemical, 4 ; ordinary of polarized 

 light, 63 ; extraordinary, 63. 



Real image, 1 ; inverted, 3. 



Reflected light, 15. 



Reflecting prism, 57. 



Refraction images, 25 ; index of medium 

 in front of objective, 7. 



Refractive, doubly, 64 ; highly, 63 ; sin- 

 gly, 64. 



Resinous media, mounting objects in, 

 order of procedure, by drying or 

 desiccation, 75 ; by series of dis- 

 placements, 75, 76. 



Revolver, 11. 



Rice, examination of, 35. 



Rule or scale for magnification and mi- 

 crometry, 37. 



Scale, of magnification and micrometry, 

 37 ; of wave lengths, 57. 



Scales of butterflies and moths, examin- 

 ation of, 35. 



Screen of ground glass, 12, 13. 



Sealing cover-glass, 71, 72. 



Section, optical, 33 ; serial, 28, 78. 



Sediment in water, determination of 

 character, 84. 



Selenite plate for polariscope, 65. 



Serial sections, 28 ; arranging and label- 

 iug, 7S; determining thickness of, 78. 



Shading object, 25 ; for rnicro-polari- 

 scope, 35. 



Shellac cement, preparation of, 83 ; re- 

 moval from lenses, 27. 



Sight, injury or improvement in micro- 

 scopic work, 27. 



Silk, examination of, 35. 



Simple microscope, see under micro- 

 scope. 



Slides, 66 ; cleaning, 66. 



Slips, 66. 



Slit mechanism of micro-spectroscope, 

 54 ; adjusting and focusing, 56 ; slit 

 and prism, mutual arrangement, 56. 



Solar spectrum or s. of sunlight, 54. 



Spectral, colors, 4 ; ocular, 10, 54. 



Spectroscope, direct vision, 54. 



Spectroscopic ocular, 10, 54. 



Spectrum, 4, 54. 



Spectrum, absorption, 54 ; amount of 

 material necessary and its proper 

 manipulation, 59, Angstrom and 

 Stokes' law of, 55 ; banded, not given 

 by all colored objects, 61 ; of blood, 

 60; of colored minerals, 62 ; of per- 

 manganate of potash, 60. 



Spectrum, comparison, 57 ; complement- 

 ary, 56 ; continuous, 54 ; double, 57 ; 

 incandescence, 56 ; line, 54 ; of male- 

 zeit sand, 62 ; single-banded, 61 ; 

 solar, 54 ; two-banded, 61. 



Spherical aberration, 4 ; distortion, 3. 



Stage, mechanical, 28 ; micrometer, 37. 



Stand of microscope, 1 ; for laboratory 

 microscope, 28. 



Standard distance (250 mm.) at which 

 the virtual image is measured, 39. 



Starch, examination of, 35. 



Stokes and Angstrom's law of absorp- 

 tion spectra, 55. 



Swaying of image, 21. 



System, back, front, intermediate, of 

 lenses, 3, 5. 



Table of magnifications and valuation of 

 ocular micrometer, 40 ; of tube- 

 length and thickness of cover- 

 glasses, 6. Of weights and measures 

 (see inside of cover). 



Terminology of objectives, 3. 



Tester, cover-glass, 69. 



Textile fibers, examination of, 35. 



Thickness of cover-glass for non-adjust- 

 able objectives, table, 6. 



Transmitted light, 16. 



Transparent objects having curved out- 

 lines, relative position in micro- 

 scopic preparations, 30. 



Triplet, achromatic, 2. 



Tripod, 2. 



5 ; for cover-glass adjust- 



; importance of, 24 ; micro- 



5 ; of various opticians, 



Tube-length, 



ment, 24 



scopical, 



table, 6. 

 Turn-table, 71. 



U— V— w 



Unadjustable objectives, 5. 

 Unit of measure in micrometry, 41. 

 Valuation of ocular micrometer, 43. 

 Varying ocular micrometer valuation, 44. 

 Ward's eye-shade. 27. 

 Water immersion objective, 24. 

 Water for immersion objectives, 24 ; re- 

 moval, 26. 

 Wave length, designation of, 58 ; scale 



of, 57- 

 Weights and measures, see inside of cover. 

 Wheat, examination of, 35. 

 Wollaston's camera lucida, 38, 48. 

 Working distance of simple microscope 



or objective, 15. 



