T.U.C. BULLETIN No. 7. 
_ As yn 2 
= $B 
TRANSVAAL UNIVERSITY COLLEGE, PRETORIA. 
FACULTY OF AGRICULTURE 
OF AGRICULTURE. 
H. CLARK; POWELL, 
Professor of Horticulture, Transvaal University College. 
Reprinted from the “Farmers’ Gazette,” February—March, 1926. 
BY