Boston for twenty years, 3. 16 ; for September, 1890, 5.04 ; 

 departure, -{- 1.88. 



Prevailing Wind. — West. 



Thunder-storms. — bih, 6th, 12th, loth, 15th, 16th, 17th, 

 20th. 



Frost. — Monroe, 22d ; Provincetown, 30th; general on 

 25th. 



8olar Halos. — 1st, 2d, 20th, 22d, 28th. 



Lunar Halos. — 25th, 28th. 



Meteor. — Provincetown, 20th, 8.50 p.m., very bright. 



Eemarks. 



Seven cyclones and the same number of anti-cyclones 

 determined the weather for Massachusetts during September. 

 Of these, the first three cyclones moved down the St, Law- 

 rence, and the others passed across New England from west 

 to east, while all the anti-cyclones moved across to the Atlan- 

 tic, in either a north-easterly or south-easterly direction. 



The average temperature was about the normal of the 

 month in other years, w^hile both the sunshine and precipita- 

 tion was above the normal. There were no days with an 

 excessively high temperature, but a lower minimum was 

 reached on the morning of the 25th over all but the south- 

 eastern part cff the State than is usually experienced in that 

 month. Along the Cape the temperature ran lower on the 

 29th and 30th than on the 25th. 



The precipitation was excessive, and nearly all occurred 

 between the 5th and 18th of the month, during which time 

 rain fell on every day but the 8th. At Provincetown the 

 amount of precipitation was the largest ever registered in 

 any month by the present observer. In that town the 

 thunder-storm of the 16th was very severe, and two men 

 were killed by a lightening bolt which entered a store through 

 a chimney. At Springfield the rainfall for the month was 

 the heaviest of any September during a period of observa- 

 tion covering forty-three years, with the exception of the 

 year 1882, when 11.40 inches fell. 



