24 



PROCEEDINGS OP THE AMERICAN ACADEMY 



succession of light breezes. Nearly all stations agree in giving the 

 storm an advance from some westerly point, and, according to the 

 times of rain beginning, its progress was at about the same rate as 

 in Connecticut, in spite of its standing to the north of the neighboring 

 centre of low pressure.* About Concord, the rain was very heavy. 



The northern and southern ends of the storm seem to have faded 

 away while the central part increased in strength as it approached the 

 eastern coast. There was heavy rain and some hail near Haverhill, 

 Mass., and all the many Newton stations, along with Boston and those 

 near by, give heavy rain ; but the most marked feature of the storm 



. \ . / I 





!s3 



Fig. 1. 



was the prevalence of easterly winds charged with low, foggy clouds, 

 just before and during most of the rain ; this was sometimes inter- 

 rupted by a "moderate" or "brisk" northwesterly breeze about the 

 time of the heaviest rain, but the east wind generally returned as the 

 rain decreased. The indraft towards the storm in front of the rain, 

 and the temporary control of the wind's direction by heavy showers, 

 here find good illustration. Lightning strokes seem to follow the 



* In Bavaria and Austria, it has been found that thunder-storms in this 

 position very commonly move to the west. 



