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the rapid passage of the air over them : such passage 

 is detrimental in proportion to its rapidity, for the 

 more rapid it is, the greater is the amount of evapo- 

 ration, and, consequently, of cold produced. Mr. 

 Daniell says, that a surface which exhales one hun- 

 dred parts of moisture when the air is calm, exhales 

 one hundi'ed and twenty-five parts when exposed to a 

 moderate breeze, and one hundred and fifty parts 

 when the wind is high.'^ 



Daring all high winds, but especially when blowing 

 from points varying between the east and the south, 

 for they are the driest in this country, the gardener 

 will always find shelter is beneficial to his plants, 

 whether in blossom or with fruit in its first stages of 

 growth, for these winds cause an evaporation much 

 exceeding in amount the supply of moisture afforded 

 by the roots. 



In March, such shelters are much required, for the 

 winds are then violent and dry even to a proverb ; 

 but it is during the days of its successor, April, that 

 sets in the only periodical wind known in this island. 

 It comes intermittingly, and with a variable force 

 from points ranging from east to north-east, and is 

 one of the most blighting winds we have. It conti- 

 nues until about the end of the second week in May, 

 though often until its close ; and it is a good plan to 

 have the tree, during the whole period, by day as 

 well as by night, protected. This periodical wind is 



