XIV 



Table of Contents 



PAGES 



Exercise 6 Statistical study of the quantity of grapes 

 from different grape vines . . . . . . 423 



Exercise 7 Study of variation in pressed specimens 

 of ragweed or some plant showing many different types 423 



Exercise 8 Study of bud variation and reversions in 



ferns 423-424 



Exercise 9 Study of the morphology of different 



kinds of flowers 424-426 



Exercise 10 Technique of the cross-pollination of 

 plants . . . . . . . . . . 426-428 



Exercise 11 Embryological studies from slides show- 

 ing cell division at different stages, chromosomes, pollen 

 mother cells, development of the embryo sac, etc. . 428 



Exercise 12 Study of pollen germination and 

 fecundation . . ... . . . . . 428 



Exercise 13 Practice in the cross-pollination of ap- 

 ples, pears, peaches, plums, etc. . . , . . 429 

 Exercise 14 Studies of mendelian inheritance . 429-435 

 Exercise 15 A study of mendelian characters in 

 timothy and oats ... .... . . . 435-438 



Exercise 16 Mendelian problems . . .. . 438-445 



Exercise 17 Ear-to-row test with corn . . . 445-447 

 Exercise 18 Corn judging .'.... . . 447-448 



Exercise 19 Statistical study of ears of corn . . 448-449 

 Exercise 20 Study of correlations of characters in 

 corn . . . ...... . . 449-450 



Exercise 21 Corn selection laboratory study . 450-452 

 Exercise 22 A study in potato selection . . . 452-457 

 Exercise 23 Study of citrus hybrids . . . 457-458 

 Exercise 24 Study of the results of the plant-to-row 

 tests of wheat, oats, cabbage, onions, or any crop where 

 data are available . . . . , " : -. , ".'-., 458 



Exercise 25 Studies of origin of varieties corn, 

 wheat, apples, plums, grapes, etc. .... 458 



Exercise 26 Field trip to experimental grounds . 458-459 

 Exercise 27 Working plans for practical breeding 

 experiments . , . '. . 459 



