TO WALL'S MANUAL 



young bolls, apparently healthy, suddenly drop from 

 the plant, and on being carefully cut open, showed a 

 Wound Avhich had been pierced by the trunk of some 

 insect, in one of these glands, and a watery rot had 

 commenced where the boll had been stung. It was 

 evident that this rot had been caused by the pierce?" of 

 some insect, 



BLIGHT. 



It is frequently observed that fine and apparently 

 healthy cotton plants, full of forms and bolls, are 

 suddenly dying in certain spots, the leaves wither, 

 droop, and finally fall off, and the plant dies. On 

 taking the plant up no worm, insect or external injury 

 could be observed. On splitting the stem open, the 

 pith in the heart had turned black, and the sap in 

 the sap vessels seemed dried up. The only conclu- 

 sion that could be drawn was, that some of the roots 

 had penetrated into a soil totally unfitted for the life 

 of the plant. What renders this disease more singu- 

 lar is the fact that other cotton plants were growing 

 most luxuriantly within one or two feet, and even in 

 the same hill with the blighted plant. It is a fact 

 worthy of observation that this disease occurs on 

 the very best land, and to a greater degree on land 

 which has been overflowed in the spring, or where 

 water seeps out at the foot of hills. 



Most of the foregoing facts in relation to the dis- 

 eases of cotton were condensed from Glover's report. 



