ILLUSTRATIONS. 



FIG. 1. Method of improving an open grove _ . _ 17 



2. A young, close-grown grove before and after thinning 19 



3. Method of improving a thicket of maple saplings 21 



4. Stand of maple saplings in need of thinning 22 



5. The same stand shown in fig. 4 after thinning 23 



6. Sugar-making utensils 29 



7. Plan of model sugarhouse 31 



8. Modern maple-sap evaporator 33 



9. Modern sugaring-off arch 34 



252 



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