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appear in early spring, from February to April, which is 

 usually a dry season. Sometimes, however, cases occur in 

 midsummer, when the ground is thoroughly wetted every few 

 days. After the wilting becomes severe the foliage begins to 

 drop, and in a few weeks to a few months, according to the 

 severity of the case, the affected branches shed nearly all their 

 leaves. In many cases the whole top of the tree is attacked at 

 one time, but very often only a single branch shows the disease 

 at first. In such cases, however, the entire tree soon becomes 

 affected. 



As soon as the rainy season begins, the trunk of the larger 

 branches puts forth numerous water sprouts, which grow 

 rapidly and at first seem to be perfectly healthy. Eventually, 

 however, these sicken and gradually die back. The branches 

 which first show the blight usually retain for a year or more 

 some foliage, which is abnormally small and of a dingy green 

 colour. New growth is very sparse and does not produce 

 normal sized leaves. Such branches often show green twig all 

 over, even when nearly leafless. In the spring following the 

 first wilting (unless it occurs late in winter, when it is not 

 until the second spring following) these branches, though 

 often nearly leafless, flower very profusely and continue bloom- 

 ing for ten days to three weeks after the normal period of 

 flowering has passed. Unlike the lemon, the flowering season 

 of the orange is very definite, and usually is not longer than 

 two weeks. This profuse and late bloom consists of small 

 flowers which almost never set fruit. In fact, very little fruit 

 is produced by a tree after it is attacked by blight. Trees 

 bearing a full crop may sometimes be attacked late in summer 

 and mature their fruit, but it is only in case of late attacks 

 that any considerable amount of fruit can be seen on diseased 

 trees. Fruit borne by blighted trees is usually undersized, but 

 otherwise is apparently normal. 



The contrast in the amount of fruit produced by trees 

 attacked by blight, and those affected with mal-di-gomma is very 

 striking, trees suffering from the latter disease often bearing 

 an unusually heavy crop. 



In very severe cases of blight the trees succumb so suddenly 

 that the leaves do not fall, but simply wither and turn brown 

 on the twigs. This is also frequently the case with a single 

 branch. In such cases the trees usually die outright in a few 

 weeks and never put out any new growth from the trunk. 

 Again, a single branch may wither as suddenly. In the great 

 majority of cases, however, a vigorous new growth pushes out 

 from the trunk at the beginning of the rainy season, and at 

 first it would seem as though the tree would recover. Some- 

 times such sprouts continue growing vigorously two years or 



