292 
know if you can give us the returns per acre which are 
obtained in the German Colonies. 
The CuHarrman: I cannot give any detailed figures; I can 
only say that the yield varies considerably in different parts. 
Togo, which is nearest to Northern Nigeria, and where the 
conditions may be somewhat similar, has only native cultivation 
of cotton, and the natives do not grow cotton by itself, but 
always between other products, chiefly yams. In the Cameroons 
we have no real cotton cultivation at present as the natives 
only grow very small patches for their own use; the Govern- 
ment farms were only founded last year, and I cannot give 
any details regarding them. In East Africa we must make 
a distinction between the cultivation of cotton by planters and 
its cultivation by natives. Some of the planters grow cotton 
between other plants, for example, Sisal hemp, but it has not 
proved advantageous, and they are abandoning this sort of 
cultivation. There are other planters, however, who grow 
cotton alone, and some even with irrigation; but the yield 
obtained by these planters varies very much from one year to 
another. In a good year, they get as much as generally in 
America—one bale of 500 lb. per hectare, that is 200 Ib. of 
lint per acre; generally it is less. We do not know yet if it 
will really pay them. Some got good! results last year, but 
only because this Egyptian cotton pays very well. The 
question depends always on the possibility of getting good 
crops from the Egyptian cotton. Among the natives in East 
Africa the return also varies very much. There are some 
districts, open districts near the Victoria Nyanza, which are 
very good; other parts, however, are only just beginning, and 
at present it is not possible to make any general statement as 
to the yield. 
PROBLEMS CONNECTED WITH THE NEW EGYPTIAN COTTON 
PEST, GELECHIA GOSSYPIELLA, SAUNDERS, THE PINK 
BOLL-WORM, 
By L. H. Goucu, Ph.D., F.E.S., 
Chief, Entomological Section, Ministry of Agriculture, Egypt. 
[AgsrRact. |] 
Geiechia gossypiclla, Saunders, a microlepidopterous insect, 
the larva of which infests cotton seed and immature cotton 
bolls, was introduced into Egypt with badly ginned cotton from 
India, between the years 1904 and 1909, and has become 
established as a pest on cotton. Popular opinions vary as to 
the extent of damage done by or expected from this insect. 
