THE WEATHER.
♦ METEOROLOGICAL OBSERVATIONS ' FOR SEPTEMBER, 1868. Mabtendaie Station. — The weather was almost uninterruptedly fine, dry and sunny throughout the month ; the sky remarkably clear, causing excessive radiation both in the day time and at night. This occasioned an unusually large daily range of temperature, the difference between the means of the day and night being as great as 2kb degrees. The extremes of radiation differed as much as 107*0 degrees, on the 29th, and 80 # 9 deg. on the average of the whole month. Thus, while the temperature in shade did not exceed 67 deg., the thermometer in the suns rays (insulated invacuo), rose to 1288 deg. on the 28th, and the reflcrted terrestrial thermometer fell as low as 17*0 deg. on the grass on the 24th. The mean temperature of the air was46'2 cleg, which is 39 deg. below the average of the same month in nine years. The total rainfall (confined to 5 days) on the surface of the ground was 077 inch, which is .1*66 inch -less than the nine years' September average. A. fine Aurora Australia was visible during the evening of the 16th, in the form of a column of brilliant white light, about 40 deg. in height, — in the W.S.W. There was a very distinct lunar halo ton the 26tb. A slight fog prevailed until 10 a.m. on the 22nd. No gales, thunderstorms, heavy rain, suo sleet, or hail occurred. The roads had become perfectly dry by the middle of the month, ana towards the clobc, rain was much needed. Barometer — Maximum, 30477 (17 th), minimum, 29*252 (12th) ; mean, 29949,' range, 1*225 inches. Thermometer in shade — Maximum, 67" i (11th), minimum, 249 deg. (24th) ; Mean, 46*2 deg. ; total range, 42*2 deg. ; mean day maximum, 58"4 ; mean night minimum, 33*9 ; mean daily range, 24*5 deg. . Radiation — tiolar mean, 108*7 deg. $ solar maximum, 128*0 (29th) ; terrestrial mean, 27*8 deg. ; terrestial minimum, 17*0 deg (24th) ; mean daily difference, 80*9 : total difference, 1110 deg. Hygrometer — Dew-point, 38*9 deg; vapor tensi n, 0*242 inch ; relative humidity, *76. Rainfall — Total, in month 0*77 inches ; maximum daily, 0*24 inch (4th) : rain fell on 5 days. Evaporation — Total, 1*32 inch. Cloud — Mean amount, 3*7— (0-10). Wind—E., 2 days j N.E., 0 ; E., 6 ; S.E., 13 ; S., o; S-W.,0; W., 6; JS.W., 4. Anemometer — Total horizontal movement, 5210 miles ; mean diurnal movement, 173 miles ; maximum, 390 miles, on (27th). CHARLES RODS -MARTEN, Director of Meteorological Stations.
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Southland Times, Issue 1038, 14 October 1868, Page 2
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404THE WEATHER. Southland Times, Issue 1038, 14 October 1868, Page 2
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