CONTRIBUTIONS FROM THE WISLEY LABORATORY. 



861 



The correspondence in these figures is very general, and particu- 

 larly where the observations have extended over a number of years. 

 This correspondence is seen not only within the bounds of Great 

 Britain but as far away as Victoria and North America. Some factors 

 tending to disturb the exact correspondence have been pointed out 

 above, but it is evident that in the main apples retain their character- 

 istic earlier or later flowering propensities, and this being so a list 

 made in one locality, provided it is founded upon a sufficient number 

 of observations, is likely to be a generally useful guide in other localities. 

 In any one year there may be a considerable deviation from the average 

 in the actual number of days the flowering of any particular variety 

 occurs after the earliest variety commenced, but with only comparatively 

 slight variations the same relative order will be likely to be followed. 



SUMMAEY. 



1. It is pointed out that many varieties of apples require pollen from 

 flowers of another variety in order to produce fruit. 



2. Other things being equal, pollen is more likely to be success- 

 fully carried if trees flowering at the same time are planted in 

 proximity to one another. 



3. The average relative order of flowering of apples grown at 

 Wisley is given. . 



4. There will be in any one year some deviations from this rela- 

 ■ tive order, but they will usually be slight. 



5. It is shown that varieties cultivated in widely different localities 

 in general maintain the same order of flowering. 



6. A list drawn up from a sufficient number of observations in 

 one locality will be in general a safe guide for planting in other 

 localities. 



