89 



Solar-intensity mean 90*11 degrees, was + 2-43 above the mean of 

 the previous ten years, though — .99 of a degree less than in 1865. The 

 maximum was recorded on the 28th, being 106-5, which is — 4*5 less than 

 the maximum last year. The minimum was 60 registered twice on the 7th 

 and 24th. 



Terrestrial-radiation had a mean of 38-10 degrees, which is — -29 less 

 than the mean of the previous ten years, and — 2-07 less than 1865 had. 

 The extremes were 50 degrees on the 1st, 30 on the 23rd. 



Raiu-faU amounted to 1-88 inches, being only + '01 more than the aver- 

 age of the 20 years, though — -68 less than 1865 had; nevertheless, my 

 rain-guage gave 2-38 inches for the present month — my guage, however, 

 is on the ground in an open garden, while Mr. Abbott's is more elevated 

 and confined. There were 15 days on which rain fell, being— 0-27 less 

 than the average of the previous eleven years, and— 2-00 less than 1865 

 had. The greatest fall recorded on any day was -45 of an inch on the 7th ; 

 but there fell sufficient on many other days, to cleanse the gutters and 

 drains. Snow fell in the city on the night of the 7th, and at daybreak the 

 groiind and low hills about the city were well powdered with it, but it 

 disappeared by ten o'clock in the morning. There were some shght 

 squalls in the city, of rain, hail, and snow on the 29th. Snow was never 

 absent from Mount Wellington during the month, and received several 

 copious additions. 



Humidity mean, 69, was —"7 J below the 20 years' average, and —2 less 

 than 1865 had. 



Elastic force of vapour meaxi, 269, is— 11 less than the 20 years' average, 

 and 8 less than 1865 had. 



Cloud mesin was, 6*27, being + "52 more than the 20 years' mean. 



Ozone mean was, 8-22, being + 0-26 above the average for September of 

 the previous nine years, and +0-23 more than 1865 had. The range 

 was from 9 maximimi to 6 minimum. 



Electricity gave 28 positive indications with maximum tension of 7 '5, 

 and minimum 2. The negative indications were 32 with maximum 

 tension of 8 and minimiim of 2. "Nil" was never recorded. No 

 lightning seen, or thunder heard. On the night of the 19th, about mid- 

 night, many persons observed a slight vibration of the earth as though 

 from an earthquake. 



28 Deaths for September, 1866, is the smallest number ever yet recorded 

 for this month ; and of all the other eleven months for the previous nine 

 years, only January, 1864, had a smaller mortality (24). In May, 1859, 

 there were recorded 29 deaths, and the same number in October, 1861. 

 The present month's mortality is —18 l-9th less than the average of the 

 previous nine years. 



Under "one year old" the deaths were little more than one-third of the 

 nine years' average, and far less than any one year of the nine. 



