Fig. 46. —nachet’s multiple microscope. 
THE MICROSCOPE. 
-4.- 
CHAPTER III. 
30. Oblique plane reflectors. The support and movement of the object : 
31, The stage.—32. Mechanism for focussing.—33. Coarse adjust¬ 
ment.—34. Fine adjustment.'—35. Method of determining the relief 
of an object.—36. Difficulty of bringing the object into the field.—37. 
Mechanism for that purpose.—38. Mechanism to make the object 
revolve.-—39. Object to be successively viewed by increasing pow r ers.— 
40. Slides to be cleaned.—41. Compressor.—42. Apparatus for apply¬ 
ing voltaic current. The illumination of objects : 43. Curious effects 
of light on objects.-—44. Illumination by transmission and reflection. 
—45. Microscopic objects generally translucent, or may be made so. 
—46. Effects of varying thickness.—47. Varying effects of light and 
shade.—48. Uses of the Lieberkuhn.—49. Effects of diffraction 
and interference.—50. Use of daylight.—51. Artificial light.—52. 
Protection of the eye.—53. Pritchard’s analysis of the effects of 
illumination. 
Lardner’s Museum of Science. d 
Ko. 110. 
33 
