ALTAMAHA GRIT REGION OF GEORGIA 



29 



into the underlying rocks. The Ogeechee in the first class, the 

 rivers in the second class, and some of the rivers and creeks in 

 the third class, seem to have cut through the Lafayette in most 

 places, but perhaps not throughout their length, while the 

 branches and smaller creeks flow over beds of Columbia sand. 



Climate. 



The following statistics of temperature and rainfall have been 

 compiled by taking the averages of the figures given in the most 

 recent U. S. Weather Bureau reports for fifteen stations in South 

 Georgia in and near the Altamaha Grit region, namely, Albany, 

 Allapaha, Dublin, Fitzgerald, Fleming, Harrison, Hawkinsville, 

 Jesup, Louisville, Millen, Poulan, Quitman, Savannah, Thomas- 

 ville, and Waycross. 



Average mean temperature (in degrees Fahrenheit) and total 

 rainfall (in inches), by months. 



Months 



Jan. 



Feb. 



Mar. Apr. 



May 



Jun. 



Jul Aug. 



Sep. 

 76.1 



Oct. 



66.6 



3-o 



Nov. 



Dec. 



Temperature 



48.7 



49-6 



58.4 65.4 



73-7 



79.6 



81.6 j 80.7 



S6.9 



50.1 



Rainfall 



3-2 



5-2 



4-7 3- 1 



3-o 



5-3 



6.3 ! 6.6 



3-9 



2.4 



3.5' 



The same by seasons. 



Seasons 



Spring 

 (March-May) 



Summer 

 (June -Aug.) 



Autumn 

 (Sept.-Nov.) 



Winter 

 (Dec.-Feb.) 



Annual 



Temperature 



65-8 



80.6 



66.2 



49-5 



65.6 



Rainfall 



10.8 



18.2 



9-3 



11. 9 



5°-3 



The averages for the whole of South Georgia would probably 

 correspond very closely with these. It did not seem worth 

 while to give the figures separately for each station, for they do 

 not differ greatly from each other. The lowest average annual 

 temperature included in the above compilations is that of Hawk- 

 insville, 63.6 , and the highest that of Thomasville, 67 °. The 

 driest place on the list seems to be Allapaha, with an average 

 rainfall of 46.1 inches, and the wettest Thomasville, with 54.1. 



Perhaps the most striking fact in connection with the above 



