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AN INCOMPATIBLE HOUSEHOLD 
Near view of an elm growing from the trunk of a pine. In the crotch of the pine, above the elm, 
may be seen the small b'ack trunk of still another tree—a paper-mulberry, the foliage of 
v-hich occupies much of the upper right-hand part of the photograph. The elm and paper- 
mulberry are so different from the pine that it is hardly believable that they could live on 
its sap, but it may be that the trunk of the pine is partly holiow and contains earth and 
decaying matter which furnish nourishment for the strangers lodging on it. Photograph 
by D. F. Higgins. (Fig. 9.) 
