W. Batkson and Carulink Pellkw 35 



[Note added June IDl-'i. Tlir paper gives results to end of 1914. 

 The work of liMS has added one point of considerable inijjortancc. 

 The cross-bred ])lant 49 of 1914 (p. 27), booked as rogue, had a branch 

 somewhat type-like in character, the next being thoroughly rogue. Seed 

 saved from the rogue parts have given all rogues, but the seed of the 

 type-like branch has given some tj'pe-like plants in addition to many, 

 rogues. Details will be given in a later communication. The case is of 

 considerable significance as adding not only another exception to the 

 general behaviour of the crosses, but also actual proof that a plant can 

 be a true mosaic of rogue and type.] 



EXPLANATION OF PLATES. 



PLATE VIII. 



Fig. 1. Stipules and leaf of type (Early Giant). 



Fig. 2. Another leaf of Early Giant. 



Fig. 3. Comparable stipules and leaf of Early Giant rogue. 



These three figures are from plants grown in pots indoors. They were drawn by 

 Mr Osterstock. 



PLATE IX. 



Fig. 4. Stipules and leaf (right hand) at tenth node of Duke of Albany. 



,, ,, (left hand) at top of stem. 



Fig. 5. Stipules and leaf of Duke of Albany rogue. Left-hand figure from fourteenth 

 node. Eight-hand figure from top of stem. 



PLATE X. 



Fig. 6. A. Stipule and leaf from sixth node of a young seedling Early Giant type. 

 /;. The same from the seventh node of the same plant, showing shape of the apex of 

 leaf when folded. C. The same parts from a seedling Early Giant rogue. T>. The 

 same from the seventh node of the same plant, showing shape of the apex of the 

 leaf when folded. 

 Note that in B, the type, the apex of the leaf is cut square, whereas in I), the rogue, 



it is pointed. 



Fig. 7. Stipules and leaflets of F^ seedUngs (type x rogue). A. Stipule of sixth node. 

 B. Leaflet of sixth node. C. Leaflet of seventh node before unfolding. I) and 

 E. Stipule and leaflet of fifth node. Note resemblance of these parts to those of 

 type plants. 



3—2 



