! PART IIL. 
been erected. In the Union alone 22 (twenty-two) registered 
ginneries have been established, and in Swaziland one. 
The cost of production and profit naturally depend largely on the 
value of lint, the yield, and the distance from the ginneries. Even 
if these should be quite favourable sufficient labour must be available 
at reasonable wages. Without an ample supply of labour it is almost 
hopeless to grow cotton profitably. Fortunately, most parts of the 
Union suitable for the growing of cotton are well supplied with cheap 
native labour. 
The cotton plant, however, is subject to the attacks of numerous 
insect pests. But in South Africa the only two really serious pests 
are boll-worms and jassid, insects which in some areas are threatening 
the very existence of this most promising industry. The work on 
breeding jassid resistant varieties by the Cotton Division has been 
handed over to Mr. Parnell of the Empire Cotton Growing 
Corporation, and a solution now seems in sight. The boll-worm 
trouble is being investigated very seriously by the Department. In 
connection with Cotton pests also it is a great pleasure to record the 
readiness with which the Corporation has come forward to assist in 
every way possible. ~~ With further assistance and co-operation from 
the Empire Cotton Growing Corporation it is confidently expected 
that some solution will be found out of the very serious boll-worm 
menace. Once this difficulty is overcome there will be no limit to the 
development of cotton growing in South Africa. 
TABLE A. 
SUMMARY OF COTTON INDUSTRY IN SOUTH AFRICA 
1. AnxnvuaL PropuctioN oF Corton Lint IN THE UNION. 
Annual Percentage of 
jp production increase over 
in pounds. previous vear. 
1910-11 via = 13,623 i 
1911-12 be WE 32,025 on 135.1 
1912-13 ye gr 32,471 iy 1.4 
1913-14 Hd 71,654 2 120.4 
1914-15 2 i 215,990 ps 201.4 
1915-16 hi Ie 227,562 5.3 
1916-17 Bus Js 243,885 2 7.2 
1917-18 a ok 283,128 7; 11.9 
1918-19 0 Pa 764,584 hE 170.1 
1919-20 Sf ... 1,094,763 43.2 
1920-21 ce. 1,169,298 = 6.8 
1921-22 os ... 1,096,182 ou (decrease) 
1922-23 i Lo 2,749,109 A 150.8 
1923-24 5 i 3,824,442 i) 39.5 
1924-25 4 6,774,423 i» 77.1 
1925-26 th .12.000,000 (estimate.® 
134 
Vaap