CONTENTS (PART II) xiii 



CHAPTER XXXIII 

 ^airy Flies . 123 



e Study of Galls .... 120 



OBSERVATIONAL LESSON XXXII 



A Piece of Turf . . . . . . . . . 124 



CHAPTER XXXIV 



Plant Associations . . . . . . . 126 



OBSERVATIONAL LESSON XXXIII 

 PART I A Fern ........ 132 



PART II A Silkworm (Continued, fourth investigation] .... 133 



CHAPTER XXXV 

 Plants that have no flowers ........ 135 



CHAPTER XXXVI 



Work for the Summer Holidays 



Life histories of Insects Nature-Study photographs Relics of Early Man . 143 



CHAPTER XXXVII 

 The Uses of Museum Collections in Nature Study ..... 151 



APPENDIX 



A List of Materials and Apparatus required, with Details as to where they may be 



obtained 157 



