94 EXPLOITATION OF PLANTS 
been no common language in which the spinner could 
explain to the grower the exact kind of cotton he required 
to meet his need. 
One practical conclusion seems to be definitely estab- 
lished, which is this: that a gametically pure cotton 
spins stronger yarn than an ordinary impure com- 
mercial variety of similar type, alii xquando, even 
though the latter is of much more pleasing appear- 
ance. This last remark carries with it the implication 
that the highly skilled judgment of the cotton-grader 
should not be trusted entirely in approving or con- 
demning new kinds of cotton, as regards. their spinning 
qualities; means should be developed whereby the 
testing of such cotton may be conducted by actual 
spinning-tests, for, after all, cotton is grown to be spun, 
and to judge it by its mere appearance is an unscientific 
conclusion to scientific labours. 
Our space will not permit of any attempt to describe 
the various processes of manufacture through which 
raw cotton may pass; they may be summarised as 
Spinning, with doubling; Fabric construction, by 
weaving, knitting or lace-making ; Bleaching ; Dyeing ; 
Calico printing; Finishing. 
The end product may be any of the well-known cotton 
fabrics—sheetings, nainsooks, cambric, muslin, sewing- 
cotton, lace, or hosiery; it may be a blanket, motor- 
tyre fabric, sutde-finish gloves, or a useful and satis- 
factory imitation of almost anything commonly made 
from silk, wool, or flax. With such a range of possi- 
bilities for industrial research it is useless to deal here, 
and we will confine ourselves to a few figures indicating 
