R. N. Salaman 17 



Below are some typical specimens : — 

 "Beading Basset," see Plate XXI. 



Round Potatoes. The tubers are practically globular, as in " Wind- 

 sor Castle." 



An examination of these different descriptions is enough, almost in 

 itself, to convince one of their artificiality, but when one comes to close 

 quarters with them by breeding various pure lines and by crossing, one 

 is soon convinced of the fact. 



If Plate I, seedlings of " Flourball," be now examined, it will be 

 seen that it is easy to pick out^ 



Longs Nos. 14, 48, 135. 

 Kidneys „ 21, 87, 88, 123. 

 Pebbles „ 74, 90, 91, 154, 179; 



but a close inspection shows a number of tubers which might be 

 described as round, but which are not globular. They are short, and 

 as deep as they are wide, such as Nos. 40, 89, 92, 112, 132, 138, 155, 

 156, 162, 185—10 individuals out of a total of 43. 



If now we turn to Plates II, III, IV, V we shall find a family of 

 100 individuals all bred from one of these peculiarly shaped tubers (A). 

 The whole family present a striking uniformity of appearance and 

 similarity to the parent. Exceptions, however, there are, and they 

 are figured in full in Plates IV and V. 



Turning to these plates we see photographed all the available 

 tubers from each of these individual plants, and it will be at once seen 

 that each individual plant in Plate IV contains striking examples of 

 this " round " type amongst its tubers. 



1 It should be said that the representatives of the individual plants here shown are 

 when there are ovals and others more resembhng "rounds" present on the same root, 

 always the oval. The bias in favour of the "longs" as against the "rounds" has been 

 purposely made in the composition of all the plates, in order that the recessive "round," 

 when present, shall be free from the suggestion that it is only a variant form of the 

 dominant "long." If therefore the effect to the eye be less convincing the deductions 

 that are drawn rest on a firmer basis. 



Jonm. of Gen. i 8 



