departure, — 0.29. Average for June at Boston for twenty 

 years, 3.28; for June, 1891, 3.06; departure, — 0.22. 



Prevailing Wind. — South-west. 



Thunder-storms. — 1st, 2d, 3d, 16th, 22d, 26th. 



Frosi. — 5th and 6th (light). 



Lunar Halo. — 11th. 



High Winds. — Koyalston, 27th. 



Remarks. 

 Although the average temperature and total precipitation 

 during June, 1891, varied very little from the normal, in 

 Massachusetts, the extremes of heat and cold and of drought 

 and moisture were w^ell marked. Hot, muggy weather and 

 heavy rains with thunder-storm occurred on the 2d and night 

 of the 3d, as a long, low pressure area moved easterly over 

 New England. The temperature fell rapidly on the 4th, 

 under the influence of cool north-westerly winds, reachino- 

 the minimum for the month on the evening of the 5th. A 

 general frost occurred on that morning, though its evil 

 eflects were somewhat checked by a thick fog that spread 

 over most low lands. From the 5th to the 16th the weather 

 was generally fair, with only an occasional trace of rain 

 on the 12th, and with steadily increasing temperature 

 from day to day. On the 16th the temperature reached 

 nearly 100°, except at Nantucket. This degree of heat 

 is almost unprecedented so early in the month. The 

 drying winds that prevailed helped to make the drought 

 very severe. The temperature fell rapidly on the 17th, 

 and copious rains fell till the 23d, being particularly 

 heavy on the 2 2d. Threatening weather, with occa- 

 sional rain and low temperature, continued till the end of 

 the month. On the 26th a thunder-storm moved easterly 

 over southern New England, accompanied in the Connecti- 

 cut River valley by considerable hail. It reached western 

 Massachusetts at a little before noon and travelled at the 

 rate of about tifty miles an hour, spreading out and decreas- 

 ing in energy after it crossed the Connecticut valley. At 

 Chicopee, hail stones were found over one inch in diameter. 

 One-half inch of rain and hail fell at Springfield. At Fisk- 

 dale, 1.12 inches of rain fell in twenty-five minutes. At 

 East Haddam, Conn., a team of eight oxen were struck by 

 lightning and five of them killed. 



