THE FRUITING OF TREES 137 



establish this correlation the series with Stirling Castle was the 

 only one which was sufficiently extensive : the records with 

 Bramley, it is true, extend over as many years, but up to 1904 

 the crops were insignificant, and had evidently been insufficient 

 to bring about any alternation in behaviour. Judging by general 

 appearances, the results with Bramley, and also with the variety 

 plots, should, if they can be continued for a sufficient number of 

 years more, lead to even more marked results than those with 



Stirling. Bramley. 117 Varieties. 



1896 . . ri 



1897 9 0*1 - 



1898 . 74 + 0-2 + 



1899 . 18 - 0-3 



1900 . . 100 -f 0-5 - 



1901 . 48 - 3-8 + 



1902 . . in + r6 - 



1903 . . o - o 



1904 . . 123 + 36 + 12 



1905 o - o o 



1906* . . 236 + 14 - 12 + 



1907 . 24 - 56 + 25 + 



1908 . . 194 + 10 - 31 + 

 1909* . . 317 + 105 + 33 + 

 1910* . . 379 -f- 12 - 12 - 



1911 ' . . 175 - 100 -f 100 + 



1912 92 - o 5 - 



1913 -283+ 86+ 113 + 

 1914* o o o - 



1915* . . 514 + 126 + 311 + 



1916 . . o - o - 7 - 



1917 . . 496 + 115 + 247 + 



1918 36 17 



Stirling Castle have done, and they will, moreover, carry more 

 weight with them, for they represent observations on a much 

 larger number of trees. 



The regular alternation of good and bad seasons becomes 

 upset in the case of Stirling Castle during the period from 1909 to 

 1911 : such a break is, of course, inevitable, whenever exceptional 

 climatic conditions occur sufficient to counterbalance the tendency 

 to alternation which has been impressed on the trees. But it is 

 probable that the irregularity in this case is really less than it 

 appears to be, for the weight of the crops is not a complete 



