THE WOlUUiN EXI'Kia.MKNTS : l llKIK OBJECT AND METHOD. 37 
we stato that particular methods of treatment bring about very dififerent 
results in dill'erent seasons, and that no results can be accepted as con- 
clusive unless they have been obtained throughout a succession of years. 
Many instances in illustration of this have come under our notice already ; 
for example, with strawberries, the order of merit of a collection of 
varieties in the same ground will be very dififerent in one year from what 
it is in another, and Avith two similar lots in different situations their 
relative behaviour in different years will show large discrepancies. In 
the same way we have found that the actual and relative effects of 
different manures and liquid dressings on strawberries are largely depen- 
dent on the season ; and we might mention sundry other instances, all 
illustrative of the great necessity for caution in drawing conclusions. In 
fact, work such as that undertaken at the farm cannot be hmTied if it is 
to be done properly, and if it is not done properly it had better not be 
done at all. 
Fig. 5.— Cypripedium callosum Sander.^:, [Joiirnal of Horticulture.) 
