BAGGING AS A COMBATIVE MEASURE om 
There remained, then, only the catching of the nymphs 
by means of some suitable appliance. For the purpose, 
bags of the general pattern used in experiments on the Rice 
Grasshopper were employed. Certain alterations were 
found necessary to make the bags suitable for work in jola. 
The stalks of this crop are comparatively stiff and unyield- 
ing, so a long pole of bamboo or split areca stem was tied 
along the lower edge of the bag mouth to give it the re- 
quired rigidity. In order to prevent the bag “ballooning ” 
too much when it was being drawn rapidly against the 
wind, a heavy piece of wood was tied to the pointed closed 
end of the bag, while a 
pole of bainboo or split 
areca stem was tied 
across the top of the 
bag about one and a- 
half feet back from the 
mouth, a string being 
passed from the centre 
of this pole through a 
hole made in the top 
of the bag and down to 
the middle of the pole 
on the lower edge end 
of the bag mouth (see 
Text-fig. 7). By 
lengthening or short- 
ening this string, the 
proper-sized opening of 
the bag can be obtain- . 
: ; Bag used in catching Jola Grasshoppers. 
ed. Bags thus made, A. Front view. B. Side view. 
about four to six feet 
wide and one and a-half to two feet high at the mouth and 
about six feet deep, were found to answer exceptionally well 
(see Plate IV, Fig. 1 and Text-fig. 7). They could be readily 
drawn by two men on the run through the crop while the 
catches obtained were very satisfactory. 
A point essential to the success of bageing on jola 
itself is that it should not be left too late. When the jola 
has reached a height of three feet, it is practically impos- 
sible to bag effectively. The stalks have become so un- 
yielding that they will not bend before the bags, the result 
being that the bag cannot be dragged as close to the ground 





TXT RIG. V7. 
