SCOPE OF GENETICS 47 



the possibility of a wild species having one 

 of its sexes permanently hybrid ? When I 

 spoke of adventures to be encountered in 

 genetic research I was thinking of such 

 astonishing discoveries as that. 



There are others no less disconcerting. 

 Who would have supposed it possible that 

 the pollen-cells of a plant could be all of one 

 type, and its egg-cells of two types ? Yet 

 Miss Saunders' experiments have provided 

 definite proof that this is the condition 

 of certain Stocks, of which the pollen grains 

 all bear doubleness, while the egg-cells are 

 some singles and some doubles. We can- 

 not think yet of interpreting these complex 

 phenomena in terms of a common plan. 

 All that we know is that there is now open 

 for our scrutiny a world of varied, orderly 

 and specific physiological wonders into which 

 we have as yet only peeped. To lay down 



