158 APPENDIX (PART II) 



LESSON XIX. (2nd week in March.) See page 20. 



Part I. Dwarf Bean Seedlings in pots. 



Part II. Potatoes growing in boxes and jars. 



Part III. Frog's Spawn used during the previous lesson. 



Alternative Subject. Pumpkin Seedlings sown a few weeks previously. 



Part IV. Hen's Eggs that have been incubated for twenty-four hours. These 

 should have been placed under a broody hen, in a chicken incubator, 

 or in a hot-water oven maintained at the proper temperature 

 (39 degrees centigrade) by means of a regulator. 



LESSON XX. (3rd week in March.) See page 28. 



Part I. The Tadpoles which have hatched from the Frog's Spaivn. 

 Part II. Hen's Eggs that have been incubated for three days. 

 Part III. Horse-chestnut Twigs, bearing a terminal, and one or two lateral 

 buds. 



LESSON XXL (4th week in March.) See page 35. 

 Part I. Potatoes growing in boxes and jars. 



Part II. Horse-chestnut Buds kept in water from the previous week. 

 Part III. Lob-worms in dishes with damp moss. 



LESSON XXII. (1st week in April.) See page 42. 



Part I. Tadpoles kept from Lesson XX. A set of preserved specimens 



illustrating the development of the tadpole. 

 Part II. Horse-chestnut Buds which have been kept in water. First used in 



Lesson XX. 

 Part III. Common Wood-lice that can roll into a ball. The jars used for 



moulds, small rolls of damp rag. 



LESSON XXIII. (1st week in May.) See page 53. 



Part I. The Potato Tubers growing in boxes and jars. 



Part II. Wood-lice similar to those used in the previous lesson. 



Part III. Lily plants which are just coming into flower (in pots). 



