CHAP. 

 II. 



32 MAIZE 



Table V. 



MEAN MINIMUM TEMPERATURES AT VEREENIGING. 



September, 1904 — March, igog. 



Table VI. 



MEAN MINIMUM TEMPERATURES AT BETHAL. 



September, igo5 — March, igog. 



25. Frost. — Late winter frosts have little effect on the 

 South African maize crop, as they usually come at a time 

 when there has not been enough rain to start the crop ; but 

 when they fall as late as the middle of October the)* may 

 cause some damage. Early winter frosts are more dangerous ; 1 



1 On the Transvaal High-veld killing frosts are sometimes experienced as 

 early as 28 March. 



