35 



willi that stem is down here some\\ 'here, down below all these 

 (lend leaves. That applies to looking for the disease on the tree, 

 or on the sprouts or suckers which may come up from the base 

 of a tree. 



No. 17. In very young nursery stock, or the young sprouts 

 which come up from a tree, or the vigorous growth on a tree, on 

 the twigs at least, we often get this type of the disease at its very 

 beginning. This is often more brilliantly colored than shown in 

 lh is view. It is very conspicuous indeed, particularly on nursery 

 slock. Although the view does not show any fruiting pustules 

 at all, by cutting into that area we get the characteristic mottled 

 mycelium or vegetative stage of the fungus beneath the bark. 



No. 18. Now we have a branch which shows the withered and 

 yellowish leaves. This yellow color follows along after the pale 

 green color. It is not a pure yellow, as a rule, although some- 

 limes it has been quite strikingly of a pure yellow color. You 

 will notice that the leaves wither after awhile; that is, they 

 crumple up after a time and that crumpling is shown, to a certain 

 extent, in this view; and also the yellow color. 



No. 19. A little later we have the deeper color. This shows 

 the browner coloration around the margin of the leaves. At the 

 left we have two leaves which show merely the beginning of the 

 discoloration. At the right the leaf is somewhat crumpled, bent, 

 and discolored. 



No. 20. This is a stage much the same as that of the little 

 branch which was shown three views back, this showing a larger 

 view of the same thing. 



No. 21. Finally the leaf assumes a somewhat brownish tint, 

 which is shown here. The leaves in this condition are often more 

 crumpled and curled up than shown here. These two leaves have 

 been flattened out somewhat so as to show the color. 



No. 22. Now to take some of the woodland views, to show 

 how the disease looks in the landscape. Here is a large tree 

 which, owing to lack of special instruction as to the coloring of 

 it , lacks one or two features which it ought to have. For instance, 

 this branch up here, and that whole branch (indicating), ought 

 to have shown the yellow brown color. The coloring, however, 

 was not noticed in time to give instructions in regard to it. This 

 view, however, is shown primarily to represent the type of tree 



