E. S. Salmon and H. Wormald 255 



in the length of the hops of certain plants which have consistently 

 produced hops larger than the average and of others which have 

 always developed small hops. The date on which the plants came 

 into flower (stigmas showing) in 1919 is also given to show that the 

 plants with small hops were, on the average, not later than those which 

 produced the larger hops. 



With regard to the shape of the hops three plants have been noted 

 as producing hops relatively broader than the average ; the well-de- 

 veloped hops on these are about i inch broader than hops of the same 

 length on other plants, and may be described as broadly ovoid. This 

 difference is sufficient to make the individual hops appear almost sphe- 

 rical and when the crops are seen in mass the plants have a characteristic 

 appearance. 



The fluctuation in the size of the hops from year to year in the same 

 plant shows in most cases such a wide range compared with the differ- 

 ences found between individual plants that the value of " size of hops " 

 as a systematic character is doubtful and will require further observa- 

 tions to determine the stability or otherwise of this character in the type 

 plants quoted in the table. 



On the other hand the " broadly ovoid " type of hop appears to be a 

 distinct variation from the ordinary type. Of the three plants mentioned 

 as showing this character the dimensions of the hops were taken only 

 during 1919 and 1920 though the hops of all three had been previously 

 denoted as "broadly ovoid." The recorded dimensions of the hops of 

 these three plants are 



Reference number 



of seedling 1919 1920 



OA59 1-5 X 1-1 1-2 X 0-9 



Z22 11 X 0-9 1-2 X 0-9 



OK 55 1-3 X 1-0 1-2 X 0-9 



" Condition." The resins to which hops owe their preservative and 

 bittering properties are secreted within the lupulin glands which develop 

 chiefly at the basal portion of the bracteoles of the cones. If a ripe hop 

 is torn or cut longitudinally or transversely the glands are seen as a golden 

 yellow powder around the axis of the cone. According to the relative 

 number of glands present as indicated to the naked eye by the intensity 

 of the golden yellow colour the " condition " was recorded as poor, fail-, 

 good or very good. In most of the plants the "condition" fluctuated from 

 year to year between fair and good. A few plants however were con- 



17—2 



