Remarks.—Early summer. The earth is dried up with want of moisture; and in Unyanyembe the dews, except during the rains, are light.
The weather is monotonous. The morn cold, raw, and bright. The sun begins to tell at about 9 a.m., and at 10 a.m. rises a high wind from the N. and E., cooled by evaporation, and pouring from the hill-lines that flank the plains. It is considered very unwholesome. Fleecy clouds appear at noon, increase in volume and depth, and disappear about sunset, which is bright and clear, except when a thick cloud-bank occupies in straight line the western horizon. Nights often cool, and sometimes still and ‘muggy.’
The Kaus, or S.W. monsoon, is supposed to blow from April to the end of November, when it is succeeded for 4 months by the Kazkazi, or N.E. monsoon. Such are the seasons at Zanzibar. In Unyamwezi, however, the E. wind seems to last all the year.
OBSERVATIONS MADE AT UNYANYEMBE, MASUI, AND NGEMO, Lat. S., 5° 5′ 12″, Alt. 3436 FT. ABOVE S. L., DURING THE MONTH OF SEPT., 1858.
‘Cox’ hung in a passage, and after the 8th in an open verandah pointing E., and exposed to reflection of sun.
‘Newman’ hung in empty tent from ridge-pole, one fold defended from air; average of 8 days, observed at 6 a.m., 65°; at 9 a.m., 85°; at 12, 108°; at 3 p.m., 107°; at 6 p.m., 80°; extreme, 50°; from 63° to 113° (highest at noon).
DAY
1 Kazeh.
2 Thermometer at 9 a.m., 76°; at 12, 85°; at 3 p.m., 85°; at 6 p.m., 83°.