123 



Highest during mouth.. 

 Lowest " '' " 



ou 23 rd 

 on 23rd 



Cloud (0--100). 

 Mean amount at 9h. a.m. ... 3-9 per cent. 

 " " at 3h. p.m. ... 4-2 " 



July. 



During this month the expedition was constantly on the move, 

 from Camps 12 to 31 the country traversed lying between lat. 

 27° 33', long. 130° 34', and lat. 26° 10', long. 127° 57', at eleva- 

 tions above sea level ranging from 1,500 to 1,850 feet. The 

 only long stoppages were four days (21st, 22nd, 23rd, and 24th) 

 at Camp 27, 1,355 feet by hypsometer above sea level ; and 

 Camp 31, or Fort Midler, 1,517 feet by hypsometer, from July 

 28 to August 2 — six days. 



The chief features of the month were very cold nights, 

 moderately warm days, and clear sky. The lowest temperature 

 was 19°, on the morning of the 20th, at Camp 26 (lat. 27° 20' 

 14", long. 130° 4'), with a dry north-ea.st wind, but the 

 thermometer fell below freezing on 17 nights out of 29 on which 

 observations were taken, and the minimum recorded 35° on only 

 four nights. On the morning of the 1st, at Camp 12, 1,580 feet, 

 it was 20°, and the mean of the lowest readings was only 30° 2'. 

 As showing the rapid rise in temperature after sunrise in the 

 interior, it may be mentioned that the mean at 9h. a.m. was 52° 

 9', whilst the mean maximum was 68° 4', or a mean daily range 

 of 38° 2'. Owing to difficulties incidental to bush travelling, 

 and where the observations have to be taken en route, the 

 maximum readings were missed on five days ; out of the remain- 

 ing 26 days the temperature reached or receded 70° on 15 days, 

 the highest being 77° on the 19th, the minimum on the morning 

 of the same day being 24°, showing a range of 53° in less than 

 12 hours. The air was also very dry, as shown by the readings 

 of the wet-bulb thermometer. The sky was clear, or nearly so, 

 on 23 or 24 days. The weather was fin e throughout, except on 

 the night of the 9tli-10th, when a few showers fell. The winds 

 were westerly during the first half of the month, and east and 

 south-east afterwards, a strong easterly gale blowing on the 

 nio-hts of the 28th, 29th, and 30th. There was a warm southerly 

 wfnd on the 31st, with a little rain and hail. A Mallet seis- 

 mometer was fixed up at Camp 31, but indicated no earth 

 tremors (vide Geological Report, ante p. 79). 



Highest reading of aneroid, 28-72 inches, at 9h. a.m. on 18th, 

 Camp 24. Lowest reading, 27-50 inches, at 3h. p.m. on the 9th, 

 on the top of Mount Watson, 2,226 feet by hypsometer. 



Mean 



