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CIVIC BIOLOGY 



Causes. Natural causes, lightning and friction, account for 

 few forest fires, and as these occur during rainstorms, there is 

 almost no damage from them. Study local forest fires and 

 tabulate under the following causes: 



FOREST FIRKS IN MASSACHUSETTS ix 1908 



In all, for Massachusetts 1378 forest fires were reported 

 in 1908, which burned over 40,327 acres of woodland, nearly 

 2 per cent of the wooded area of the state. In the whole of 

 Prussia 1400 acres have been burned in the past twenty-five 

 years, or less than 0.02 of 1 per cent a year. At this rate the 



