CONTENTS (PART II) 



Note 



Vll 



OBSERVATIONAL LESSON XVII 



PART I A Seedling (Continued, second investigation) . . 1 



PART II The Sun (Continued) . . 2 



PART III A Potato Tuber ... 2 



CHAPTER XVIII 



The Storehouses of Plants ... 4 



New Plants from old pieces ... g 



OBSERVATIONAL LESSON XVIII 



PART I A Seedling (Continued, third investigation) . 9 



PART II Frog's Eggs ........ 9 



ALTERNATIVE SUBJECT A Conn .... 10 



PART III A Hen's Egg ... 10 



CHAPTER XIX 



The Hatching of Trout Eggs . n 



The Toad ... 13 

 Newts ... 



A Fresh Water Aquarium . 15 



The Nesting of the Stickleback . . 18 



OBSERVATIONAL LESSON XIX 



PART I A Seedling (Continued, fourth investigation) . . 20 



PART II A Tuber (Continued, second investigation) ... 20 



PART III A Developing Tadpole ... 21 



ALTERNATIVE SUBJECT A Pumpkin Seedling . 21 



PART IV A Developing Chick . 22 



