1921] CHAM BERLAIN—GROWTH RINGS 303 
good rains at Christmas, then drought to the middle of March, and then 
good soaking rains. The yearly amount of rainfall is often very interesting. 
2 
hours. The long and short of it is that we live in what might be called the 
fag end of the summer rain area; but it can best be described as an area of 
uncertain rains. 
tf 
ie 
if 
&, 
e 5 
Fic. 16.—Small portion of region of secondary bundles, including six growth rings, 
numbered 1-6; ° 
Mr. GALPIN replied as follows: 
Around Grahamstown and the coastal districts generally, the 
very Seiten with no winter frosts and the rainfall fairly equally distributed 
throughout the year. Like the whole of South Africa, they have their lean 
period of prolonged drought or of oe G rains. These remarks apply to 
Cathcart as well, but in that district, with an altitude of about 4000 ft., the 
seasonal changes are greater, ith summers and frosty nights in winter. 
