METEOROLOGICAL OBSERVATIONS.

Southland Times, Volume III, Issue 272, 1 June 1866, Page 2

METEOROLOGICAL OBSERVATIONS.

Taken at Martendale, Southland, New Zealand, in April, 1866; lat., 46deg. I7min. S. ; long., 16Sdeg. 20min. E. Height above sea level, - : 79ft.

A wet, boisterous, disagreeable month, like its predecessors. The harvest was not finished even at the end. Tlie barometer wa.3 very high from the ] Sth to the 24th uit., nevertheless a severe 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 the 24th. During the 27th and 28th it blew hard from N.W., and on the latter day the barometer suddenly fell from 29*62 inches to 2891 inches, or - 7l inches in 24 hours. At its lowest point the wind suddenly veered to TT.N.W. and torrents of rain fell, no less than half-an-inch being registered in twenty minutes, It subsequently blew strongly from W. to WAS AW., with changes, until the close of the month, especially through the night of the 30th. : There was a great deal of thunder and lightning on the 9th ; some snow fell on the 7th, and hail and sleet frequently during the month. Barometer — Mean atmospheric pressure (corrected to standard temperature of 32deg. Eahr., and reduced to sea level), 29706 inches j maximum, 30-41 inches on the 15th; ininimnm, 28 - 91 inches on the 28th. Totar.range of atmospheric pressure, l - 50 inches. ' Thermometer — Mean Temperature of the air, 49-1 deg., or 2*6 deg. below seven years' average. Highest day temperature, 71 "5 deg. on Sth. Lowest night -temperature, 29*4 deg. on 16th. Total range temperature, 41*9 deg. Hygrometer — Mean degree of atmospheric humidity, 79. Complete saturation be^ng represented by 100. Mean temperature of evaporation, 46*1 deg. Dew point, 42.9 deg. Elastic force of vapour, '271 inch. Badiation — Solar, maximum, 96 deg. on 6th, Terrestrial minimum, 2*-2 deg. on 16th. Rainfall — On surface of ground, 4*516 inches j amount of evaporation, V11& inch. Cloud— -Mean amount, 6, (overcast -^10.)

The instruments in use at this observatory are, —barometer, No. 139, by Burrow, aud 733 by Casella. Thermometer— No. 513, 540 and 546 by Casella; No. 2215, 2189 and 2033, by Negretti and Zambra ; three by Troughton and Shnms ; 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 Troughton and Simros, and Negretti and Zambra. Rain°guages— Casella' s, 10 inches square, ordnance pattern; Livingstone's, 3 inch,* African, by Casella, No. 843, and two other rain-guages. Evaporalion-guage, by Casella. AnemometerRobinson's, by Casella. CHARLES MARTEN, Director of Meteorological Stations. Martendale, lst May, 1566.

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