PLATE 34 



Fig. 1. F tobacco seedlings of hybrids between Nicotiana Tabacum 

 variety macropliyUa and Nicotiana Tahacum variety virginica. On the 

 left seedlings grown from light seed, on the right seedlings grown from 

 hea\'y seed. Many of the seedlings grown from light seed are one month 

 older than the seedlings grown from hea^^ seed. 



Fig. 2. Typical flowers of three varieties of Nicotiana acuminata 

 showing the difference in corolla diameter. 150/07 is variety I, 192/08 

 is variety II and 53/03 is variety III. All approximately X%. 



[168] 



