222 



THE AMEBIC AN NATURALIST [Vol. LIII 



TABLE I 



Maryland Mammoth and Normal 'Vakieties 



l.laiit> of the ('ro..s Maryland Mammoth ? X A\ CJihim- 

 sis (S. P. I., 42,355) were grown in 1918, and records 

 of dates of blooming were made for comparison witli the 

 dates of blooming of tlie parent N. CJiineusis, which is an 

 unusually small and early maturing variety of N. tabacum. 

 From the following table it is evident that the parent N. 

 Chiuensis blossomed somewhat earlier than the plants 

 of the cross with ^ra^^iand ^[annnoth: 



In the cn)>s Afaryhni.l Mniniiu.lh :■' AVIiite Burley, 

 Mammoth l>ui-h-> ivpc- !ia\r roii-l-h'iii l> nitiM-ared in the 

 Fo progenie-. and lia\M- ^inc,. iriiialinMl true to Mammoth 

 character. Th.-.' Imv.. hern <-i<.-Md with a inmibcr of 



