8 



Frosts. — Amherst, 17th, 23d; Ipswich, 3d; Monroe, 

 17th. 



Thunder-storms. — Amherst, 14th, 28th ; Fitchburg; 28th ; 

 Ipswich, 5th, IGth, 28th; Leominster, 4th, 14th, IGth ; 

 Provincetown, 4th, 5th, 15th, 16th. 



Solar Halos. — Leominster, 7th, 23d. 



Remarks. 

 The month of May, 1890, when compared with that month 

 in other years, has been cool and wet. Though the season 

 opened comparatively early, it is now about a week late. 

 The average temperature has been only slightly below the 

 normal, but the nights have been decidedly cool, and numer- 

 ous frosts have occurred. The weather of the month was 

 influenced by the passage of twelve cyclonic areas and seven 

 anticyclonic ones. Most of them were areas- of little energy, 

 and produced no severe atmospheric disturbances. There 

 were exceptions to this rule, such as the heavy rains of the 

 4th, 6th, and 26th to 28th, and also the short but heavy rain 

 on the 20th, and the numerous thunder and hail storms. 

 But these latter must be considered secondaries, accompany- 

 ing and influenced b}^ the larger or primary areas. The 

 amount of precipitation has been in excess, and has served 

 to keep low lands almost too wet to work. The amount of 

 sunshine has been slightly below the normal, especially in 

 the northern section. 



