36 BULLETIN 258, U. S. DEPARTMENT OF AGRICULTURE. 



Essential parts of the -flower. — The stamen and the pistil with their 

 divisions. They produce seed. 



Pollination. — (1) Eipened pollen grains when shed by the anther 

 either fall upon or are carried to the stigma of the pistil. The pollen 

 grain produces a thread-like growth, which passes through the style 

 into the ovary, where it gives off a cell to unite with an ovule. This 

 union develops a seed. (2) Kinds of pollination: (a) Self-pollina- 

 tion, (5) cross-pollination. The latter is accomplished by winds and 

 insects. 



Class assignment. — Duggars, pp. 7-20. (Omit paragraphs that 

 are not essential.) 



Pra-ctical exercises. — Have the pupils bring to school for study 

 flowers of turnips, peaches, apples, strawberries, honeysuckles, and 

 dogwood. Learn to name the principal parts. Which of these 

 flowers are visited by insects ? 



Correlations. — Language and drawing: Have each member of the 

 class describe and make drawings of one or more of the flowers 

 studied. 



LESSON EIGHT. 



SUBJECT: WEEDS. TOPICS: (l) THE INJURY WEEDS DO; (2) KINDS AND HABITS; 

 (3) METHODS OF COMBATING. 



The injury weeds do. — They use plant food, take up moisture, make 

 cultivation expensive. 



Kinds and habits. — Annuals, biennials, perennials. 



Methods of combating. — Uprooting, cutting off tops to prevent 

 seeding, smothering, selecting clean seed. 



Class assignment. — Duggars, pp. 182-184. Supplement the lesson 

 with notes from Farmers' Bui. 660. 



Practical exercises. — Have the pupils bring to school for study 

 specimens of all weeds that may be found in the gardens, orchard, or 

 fields at this time. Learn to name them and list the names with a 

 brief description in the class notebook. Those that can not be identi- 

 fied should be sent to the Alabama Polytechnic Institute, Auburn, 

 Ala., for classification. 



Correlations. — Language and drawing: Make written descriptions 

 and drawings of the weeds studied. History: Require the pupils to 

 prepare an account covering the following points with reference to 

 the most injurious weeds found in the community: The dates of 

 introduction, the spread, the damage done, and the methods of com- 

 bating. 



o 



