372 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



does not mean quite the same in this case as it does in the Wisley list, 

 and that would make some little difference ; further, it is to be re- 

 marked that only eight days separate the earliest and the latest in 

 Mr. Hooper's list, whereas, taking the same varieties at Wisley (over 

 a longer period), there is an average of twelve days between the 

 full-flowering of the earliest and the latest. 



It may be concluded that there is a general regularity in the order 

 of the flowering of pears as with apples ; but that each season sees 

 deviations from the order, not sufficiently marked, however, to destroy 

 the value of the list given above as a guide to the varieties that should 

 be planted near one another in order to facilitate pollination. 



I have to thank several of the senior students in their successive 

 years for assistance in making the records on which these observations 

 are based, and particularly Messrs. B. P. Perry, A. J. Preece, and 

 C. W. Daniels. 



