Preface to the Third Edition. 



The author has taken advantage of a change of pub- 

 lisher to revise and enlarge this, the third edition of 

 his "Microscopy for Beginners," and to make a slight 

 alteration in the title, whereby it becoines more 

 nearly descriptive of the character and scope of the 

 book. The opportunity has likewise been taken to 

 add considerable new matter to the text and several 

 new illustrations. 



Trenton, N. J., 1895. 



