METEOROLOGICAL OBSERVATIONS.

Southland Times, Volume III, Issue 268, 28 May 1866, Page 3

METEOROLOGICAL OBSERVATIONS.

Taken at Martondale, Southland, New Zealand, in April, 1866; lat., 46deg. I7min. S. ; long., 168deg. 20min. B. Height above sea level, 79ft. A wet, boisterous, disagreeable month, like its predecessors. The harvest was not finished oven afc the end. The barometer was- very high from fche 13th to the 24th ult., nevertheless a sevore and destructive storm occurred on the 18th from the W. and W.N.W.. and a heavy gale from the N.N.W. on the night of tlie "24th. During the 27th and 28th it blew hard from SAW., and pn the latter day the barometer suddenly fell from 2962 inches to 2891 inches, or *71 inches in 24 hours. Afc its lowest point the wind suddenly veered to W.N.W. and torrents of rain fell, no less than half-an-inch beings registered in twenty minutes, It subsequently blew strongly from W. to W.N.W., with, changes, until the close of > the month, especially through tho night of the 30th. There was a great deal of thunder and lightning on the 9th ; some snow fell on the 7th, and haU and sleet frequently during the month. ' Barometer — Mean atmospheric pressure (corrected to standard temperature of 32deg. JFahr., and reduced to sea lovel), 29 - 706 inches ; maximum, 30*41 inches' ou the 15th; minimum, 28*91 inches on the 28th. Total range of atmospheric pressure, I*so inches. * Thermometer— Mean Temperature of the air, 49*1 deg., or 2*6 deg. below seven years' average. Highest day temperature,' 71*5 deg. p on sth. Lowest night temperature, 29-4 deg. on 16th. Total range of temperature, 41*9 deg. Hygrometer — Mean, degree of atmospheric humidity, 79. Complete saturation being represented by 100. Mean temperature of evaporation, 46*1 deg. Dew point, 42.9 deg. ' Elastic force of vapour, *27l inch. Radiation— -Solar, maximum, 96 deg. on sth. , Terrestrial minimum, 24*2 deg. on 16th. Rainfall — On surface of ground, 4*516 inches ; amount of evaporation, I*llß inch. Cloud — Mean amount, 6, (overcast — 10.) Wind — Q-eneral direction, "Vr**? and SAW.; mean force, (0-12)— 5. "

The instruments in use at this observatory are, — barometer, No. 139, by Burrow, and 733 by Casella. Thermometer — !^o. 513, 540 and 546 by Casella ; No. 2215, 2189 aijd 2033, by Negretti and Zambra; three by Troughton and Simms ; one by Barrow. Standard thermometers are by Casella, and one by Negretti and Zambra, and two ordinary thermometers corrected to standard. Hygrometer — Mason's, or dry-and- wet-bulb, by.TV Troughtoii and Simms, and Negretti and Zambra. Rain-guages — Oasella's, 10 inches square, ordnance pattern; Livingstone's, 3 inch, African, by Casella, No. 843, and two other rain-guages. Evaporation-guage, by Casella. Anemometer — Robinson's, by Casella. CHARLES ROUS MARTEN, Director of Meteorological Stations. Martendale, Ist May, 1866.

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