124 



REPORT UPON COTTON INSECTS. 



are indicated in the tables, viz, northerly, to include northeast, north, 

 and northwest; southerly, to include southeast, south, and southwest; 

 and east and west. When south winds are mentioned or the letter S oc- 

 curs, therefore, either due south, southeast, or southwest are to be un- 

 derstood. 



From a study of the northerly and southerly winds, as given in these 

 returns, we find that prevailing southerly winds occur in February in but 

 two States, Alabama and Texas, in the ratios of 7 to 4, and 10 to 7, re- 

 spectively. In Georgia the northerly winds prevail in the ratio of 7 to 

 4 in each State, while in the other States they are equal. In March 

 northerly winds prevail only in North Carolina and Florida, while the 

 northerly and southerly winds are equal in South Carolina and Georgia, 

 and southerly winds prevail in the remaining States. For April, May, 

 and June the prevailing direction is almost invariably southerly for all 

 the States, with the exception of Florida and Tennessee, where they are 

 about equal. In the Gulf States the percentages of southerly winds run 

 very high, culminating in June. For the remainder of the year, until 

 frost, the months have been considered as a whole, though a subsequent 

 study of the weather-bureau returns shows that it would have been better 

 to have considered them separately, as a decided change in direction, 

 particularly in the Gulf States, takes place in September, so marked a 

 change indeed that the records of north winds in September and October 

 almost neutralize the high percentage of south winds in July and Au- 

 gust. 



The following tabulation of returns for the different months for the 

 State of Alabama will illustrate the manner in which the questions are 

 answered : 



ALABAMA. 



