CONTRIBUTIONS FROM THE WISLEY LABORATORY. 599 



Tuber 

 number 



Weight 

 in 



grammes 



Number of 

 eyes 



Eyes 

 shallow 

 or deep 



Grouping 

 of sprouts 



Sprouts 

 injured 

 or not 



Number | 

 of sprouts 

 removed 



Situation 

 of sprout 

 left 



Skin 

 smooth 

 or rough 







Skin 

 injured 

 or not 



Texture 

 of the 

 tuber 











(b) Tubers not sprouted. 









52 



72 



6 



t m 1 m 1 



... 1 si 



+ 







m 



+ 



m 



53 



60 



7 



t m 1 m 



... 1 si 



-f 



2 



1 



m 



+ 



m 



54 



56 



7 



t m 1 m 



tsi ... 



4- 



1 



O 



t 



sm 



+ 



m 



55 



72 



8 



t m 1 m 



t si ... 



+ 



O 



t 



m 



— 



f 



56 



54 



13 



tm 1 d 



tsi ... 



4- 



O 



t 



m 



+ 



m 



57 



83 



7 



t m Id 



t gr 1 si 



+ 



7 



t 



r 



— 



m 



58 



57 



5 



tm lm 



tsi ... 





0 



t 



r 



+ 



so 



59 



40 



4 



t m 1 m 



tsi ... 





0 



t 



r 



+ 



m 



60 



46 



6 



t m 1 m 



tsi ... 





0 



t 



r 



+ 



m 



61 



5i 



7 



t s Is 



... isi 





0 





r 



+ 



so 



62 



40 



7 



t m 1 m 



... 1 si 







1 



m 



+ 



so 



63 



35 



5 



t m 1 s 



t si 1 si 





1 



t 



r 



+ 



m 



64 



50 



7 



t s lm 



... Isi 





1 



1 



r 



+ 



m 



65 



s c 

 J J 



n 

 1 



t m 1 m 



... Isi 



+ 



1 



1 



sm 



JL 

 T 



f 



66 



40 



6 



t m 1 m 



tsi ... 





0 



t 



r 



-J- 



m 



67 



80 



8 



t (1 Id 



t gr 1 si 



+ 



6 



t 



m 



4- 

 1 



f 



68 



^2 



2 



1 s 



... Isi 





0 





m 



4- 



m 

 in 



6q 



4^ 





... 1 m 



1 



... 1 si 



+ 



2 





m 



4- 



1 



m 











(c) Soft tube 



rs. 











70 



80 



8 



t d 1 m 



t si 1 si 



1 + 



1 



t 



m 



+ 



m 



71 



84 



7 



t d 1 m 



t gr 1 si 



+ 



7 





m 





so 



72 



70 



7 



t m 1 m 



, t gr 1 si 



, + 



3 





m 





so 



73 



74 



6 



td Id 



: t si ... 



1 + 



0 



t 



m 



+ 



m 



74 



63 



I 



t m 1 m 



1 1 gr 1 gr 



1 + 



8 





sm 



+ 



so 



75 



5i 





t m 1 d 



t si 1 si 



i + 



3 





sm 



+ 



so 



76 



9 F 



8 



t d 1 d 



i t gr 1 gr ' + 



9 





sm 



+ 



so 



77 



72 



9 



t m 1 m 



t gr 1 si 



+ 



8 





sm 



+ 



so 



78 



72 



8 



t m 1 m 



... Isi 





1 



l" 



r 



+ 



f 



d = deep f = firm gr = groups 1 == lateral m =* medium r = rough 

 s = shallow si = single sm = smooth so = soft t = terminal 

 + = injured — = not injured. 



Numbers printed in heavy type indicate that the tubers in question produced 

 bad plants. 



From this Table it is evident that the tubers are very variable. 

 The eyes vary from very shallow and superficial to very deep. This 

 is well shown by fig. 192 E (tuber 17, Table I.) and fig. 192 B (tuber 21, 

 Table I.). The occurrence of sprouts singly and in groups is illustrated 

 by fig. 192 D (tuber 12) and fig. 192 C (tuber 76, Table I.) respectively. 

 The skin varies from quite smooth to very rough — see fig. 192B (tuber 21) 

 and fig. 192 A (tuber 2) or fig. 192 D (tuber 12, Table I. a). The tubers 

 themselves may be quite firm or very flabby, as in fig. 192 B (tuber 21) 

 and fig. 192 C (tuber 76) respectively ; in fig. C the skin is wrinkled 

 owing to flabbiness. 



It is quite impossible, of course, to tabulate all the characters in 

 a Report of this kind. The tuber weight is given as an index of 

 general uniformity of size, but the shape, which is variable, is not 

 given. The eyes vary, of course, in other characters than depth. 

 They may be more or less circular, triangular, or elliptical in 



