53 



Climate exerts even a greater influence on the yield and quality 

 of cane than does soil or methods of cultivation. 



A climate essentially tropical with copious rains from which the 

 cane derives its water, and a steamy, sultry atmosphere, produces a 

 cane of fair yield, low sugar, low fibre, and high amount of juice of 

 fair purity. 



A climate where the summers are warm but the winters are cool, so 

 cool that the cane is in danger of being injured by frost, will produce 

 a cane of low yield, low sugar, low fibre, and high amount of juice of 

 low purity. 



The climate that seems to be conducive to heavy yields of cane, 

 and of canes containing high sugar, high fibre, and a juice of high 

 sugar and good purity, is one which is comparatively warm throughout 

 the year, and where the cane derives its water chiefly or wholly from 

 irrigation. Such are the conditions on the dry sides of the Hawaiian 

 Islands, and it is there that the highest production of cane is 

 found. Peru is another country having such conditions. While in 

 many of the sugar districts of Peru the climate may not be as warm 

 as in some of the dry sections of Hawaii, there are districts that are 

 quite as warm. Peru belongs to the heavy producing class, and 

 although it requires somewhat longer for cane to mature in most of 

 the districts here than in some other sugar countries, four or five 

 profitable cuts can be made. 



Temperature records taken in a given locality by different methods 

 of observation may give radically different results. The thermom- 

 eter is supposed to be kept in the shade, but the shaded spot may be 

 so protected as to prevent a free circulation of air and the tempera- 

 ture from a thermometer so placed would not tally with that re- 

 corded by a thermometer placed where there was a free cir- 

 culation of air. If temperature records are to have value for compar- 

 ison, they must be taken according to The Standard Regulations. 



