CONTESTS, 



CHAPTER 1. 



PAGE 

 A HALF-HOUE O.\ THE STRUCTURE OF THE MICBCSCOFE 1 



CHAPTER II. 



A HALF-HOUR WITH THE MICROSCOPE IN THE GARDEN 30 



CHAPTER III. 



A HALF-HOUR WITH THE MICROSCOPE IN THE COUNTRY 47 



CHAPTER IV. 



A HALF-HOUR WITH THE MICROSCOPE AT THE POND-SIDE 56 



CHAPTER Y. 



A HALF-HOUR WITH THE MISCROSCOPE AT 1HE SEA-SIDE 67 



CHAPTER VI. 



A HAL*. HOUR WITH THE MICROSCOPE IN-DOOKS 78 



CHAPTER VII. 



A HALF-HOUR WITH POLARIZED LIGHT 96 



APPENDIX. 



THE PREPARATION AND MOUNTING OF OBJECT 119 



b 2 



