300 



DR. L. H. GOUGH. 



(3) Attacked when nearing complete maturity, no damage is caused to the lint, 

 but the seed loses substance, thus causing a rise in the percentage of lint observed. 



Thus Gelechia attack can produce results ranging from total suppression of the 

 production of lint to an apparent rise in the percentage of lint produced. 



Table XIII. To show Fluctuations of the Percentage of Lint within Single Bolls. 



Boll Number. 



1 



2 





•4 



5 



6 



7 



Lock A. 

















Seed 1 



57f 



37 



58f 



32 



39* 



33 



38 



2 



35 



311 



29) 



42* 



32 



31 



32 



38 



3 



34 



30 



28 



29 



35 



4 



32 



26 



35 



29 



27* 



29 



34 



5 



30 





35 



27 







31 



6 







34 









30 



Total Lock A. 



34 



31 



39 



30 



30 



30 



34 



Lock B. 

















JSeed 1 



44 



62 1 



35 



33 



45* 



34 



38 



2 



37 



39 



34 



32 



32 



33 



35 



3 



36 



38 



33 



30 



32 



31 



35 



4 



34 



32 



33 



30 



30 



29 



32 



5 



29 



32 



30 



27* 



28 



27 



31 



6 





28 











31 



Total Lock B. 



36 



37 



33 



30 



32 



31 



34 



Lock C. 

















Seed 1 



38 



36 



35 



39* 



42* 



42| 



43 



2 



37 



35 



34 



32 



33* 



36 



38 



3 



33 



34 



33 



32 



33* 



34 



35 



4 



31 



34 



33 



30* 



33 



30 



32 



5 



28 



32 



32 



30 



30 



26 



32 f 



6 





30 







26* 





27 



Total Lock C. 



34 



33 



33 



31 



32 



31 



35 



§ Total Boll. 



34 



34 



35 



31 



31 



31 



34 



* Attacked by pink bollworm. 



f Seed development arrested for otlier causes than pink bollworm. 



{Attacked seeds were weighed without the pink bollworm. 



§ Total for all bolls 33. 



Table XIV has been prepared to show the limits within which fluctuations may, 

 under the present conditions (crop 1917), be most frequently expected to lie. All 

 the samples came from the same crop, being Sakellarides grown on one feddan 

 of land at Gemmaiza * in 1917. For the purposes of this examination 30 sets 

 of 100 sound seeds were selected as a control, with 30 sets of 100 damaged seeds 

 and 30 sets of 50 " double " seeds ( = 100 seeds per set) for comparison. As 

 additional control 30 random samples each of about 150 grammes weight were 

 taken from the same material. 



* Ministry of Agriculture's Experiment Farm. 



