OBSERVATIONAL LESSON XXIV 



PART I 

 AN OPENING FLOWER (continued, 2nd Investigation) 



PREPARATIONS FOR WORK 



The plants previously used, should be placed in front of their respective owners. 



DIRECTIONS TO THE PUPIL 



(1) Kecord the length of the flower 

 stalk, the increase in size of the 

 bud, and any changes in the ap- 

 pearance of the latter. Make (arid 

 date) a sketch, to the same scale as 

 before. 



FIGURE 183. A Lily bud swelling. 



PART II A SILKWORM 

 PREPARATIONS FOR WORK 



Distribute the trays containing silkworms. 



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