^^, 



i"or two winters, 

 l.l. The hai i's serve a two-i'old I'unction; while younp; to 

 keep the r rowing tissues moist, atrl w>t^>^ .'r-nvn t,o 

 keep off moisture. 



13. One case of the ref];enej'at ion of tlie fibrous layer 

 of the anther wall, by the epidox'mal layer was ob- 

 served. 



14. The otb.er species of the family investi"-ated all 

 have a resting stage of the pollen, though it is 

 much shoi'ter. 



15. The other genera of the family all have (luadriloc- 

 alar anthers. 



In comparing Hamamelis virginian a with its rel- 

 atives, it seems certain that it v/as once a spring 

 flowering plant, nnd that it has worked backward throi g} 

 the winter. It difl'ers from H. arborea essentially in 



