10 The Microscope. 



CHAPTER II. 



THE MICKOSCOPE UNPACKED. 



IT it now be supposed, reader,, that you 

 have chosen your microscope, either from 

 a careful study of books, or by the advice 

 of some friend "good at need," and have com- 

 menced to unpack it. You will probably find the 

 tube and the stand detached; the eye-glasses, 

 or the single eye-glass, arranged in the case, and the 

 object-glasses put by into little brass boxes. "You 

 take out the stand, and place it on your table. Some 

 microscopes have a tall case, capable of holding the 

 microscope ready for use, with the tube attached to 

 the stand. Should yours not be thus arranged, you 

 will screw on the tube ; but you had better put on the 

 object-glass first, as there is a kind of ' ' knack " in 

 making it screw on, and an object-glass might easily 

 be injured by letting it fall. Choose the object-glass of 

 lowest power, as easiest to work with ; you will know 

 it by looking at any small object or piece of printing 

 through it, as it will show this less magnified than the 

 other object-glass or glasses. You place the eye-glass 

 in the upper end of the tube, if it is not already there. 

 Is the microscope now ready for looking at an 



