CULTIVATION 



35 



paragraph and should only be resorted to under com- 

 pulsion ; but it seems to me necessary for these special 

 Palestine Oncocyclus Irises until at least they have been 

 acclimatised. . . . Each of us must act according to our 

 climate and conditions, checking and correcting our 

 scientific deductions by careful experiences ; and this, 

 I take it, is the true art of gardening. The other 

 Oncocyclus Irises with me, for the most part, make 

 very little growth in autumn after the first spurt, which 

 follows the late September rains, and I can much more 

 safely leave them in the ground, for remaining in the 

 ground is undoubtedly the most natural condition, and it 

 is with great reluctance that I am driven to interference." 

 Mr John Hoog (C. G. Van Tubergen, jun., of 

 Haarlem) has done an immense service by importing 

 soil and getting it analysed. The result is given in his 

 article in the Journal of the Royal Horticultural Society , 

 vol. xxvi. (1901) p. 324, "On some experiments in the 

 cultivation of Oncocyclus Irises." He also had the soil 

 of his own garden analysed, and the results of the 

 analyses are as follows : 



