SUPPLEMENT TO THE HONGKONG GOVT GAZETTE OF 26TH-JULY, 1884. 619
at the Peak, as shewn in Table IX, SE by E; the Lower Clouds came partly from about E and partly from ahout SW. Their average Direction was S and the Direction veered with increasing height, the highest clouds coming from W. On an average 80 per cent of the sky was clouded.
Table XI and Table XII exhibit the readings of the Barometer and the Thermometers at Victoria. Peak and at Cape d'Aguilar.
The Mean Temperature was 68.5 at the Peak and 72.9 at Cape d'Aguilar, the Highest was 76.9 on the 22nd at the Peak and 86.3 on the 17th at Cape d'Aguilar, and the lowest was 57.2 on the 14th at the Peak, and 62.8 on the 13th`at Cape d'Aguilar.
The Mean Temperature in Hongkong decreased one degree Fahrenheit for every 376 feet ascended.
Table XIII exhibits the Relative Humidity as determined from observations of the Dry and Damp Bulb Thermometers. The Mean Relative Humidity at the Observatory was 85, at Cape d'Aguilar 93, at the Peak 95. These numbers are reduced to the mean of the 24 hours by aid of Table IV. The Least Relative Humidity registered was 56 at 4 p. on the 31st at the Observatory; 73 at the same time at Cape d'Aguilar, and 66 at 10 a. and 10 p. on the same day at Victoria Peak.
Table XIV exhibits the Tension of Aqueous Vapour at the Observatory and at the Peak. The Mean Tension was 0.736 inches at the Observatory, and 0.661 inches at the Peak. These numbers - are reduced to the mean of the 24 hours by aid of Table IV. The Greatest Tension registered was 0.931 at 10 p. on the 22nd at the Observatory, and 0.866 at the same time at the Peak. The Least Tension was 0.444 at 4 p. on the 13th at the Observatory, and 0.440 at the same time at the Peak.
Table XV exhibits the amount of Rain measured at 10 a. on the following day, and the duration of Precipitation at the Observatory. The greatest amount of Rain fell on the 1st, when it rained 2.575 inches at the Observatory, 1.53 at Stone Cutters' Island, and 3.20 at the Peak.
Heavy thunderstorms passed over the Observatory at noon and at 5 p. on the 1st. Thunder and Lightning were registered during the previous night and up to the evening on the 1st.
Thunder and Lightning were registered in the evening on the 3rd.
On the 9th Thunder was heard at 4 p. and a heavy Thunderstorm passed over the Observatory at 7 p.
Thunder and Lightning continued during the following night and at 63 p. on the 10th a heavy Thunderstorm passed over the Observatory.
Lightning was registered during the following night and at 3 p. on the 11th a heavy Thunder- storm again passed over the Observatory.
At 5 p. on the 18th a Thunderstorm passed.
Lightning was seen in the evening on the 22nd and Thunder and vivid Lightning were registered during the following night.
Lightning was seen in the evening on the 27th and during the following night.
Unusual Visibility was noticed on the 2nd, the 4th, the 5th, the 17th and on the 23rd.
Dew fell during the evening on the 2nd, the 7th, the 8th and on the 11th, and during the nights between the 20th and the 21st, and between the 25th and the 26th.
Lunar Halos were seen on the 2nd and on the 11th, and Lunar Coronas on the 7th, the 8th, and the 31st.
Fog was not seen at the Observatory.
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