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Owners of woodlands in these states should cut and use all large 
infected trees at once. Since the fungus affects the bark only, 
the wood is perfectly sound unless allowed to stand and be sub- 
jected to other agencies causing decay. Small trees with body 
infections will soon die, so they might as well be cut at the same 
time. Healthy young trees with only a few diseased twigs 
might be treated by pruning a foot or more below the discolored 
area and covering the wounds with coal-tar. Care should be 
taken not to make new infections with the’ hands or pruning im- 
plements while the work is being done. 
Fortunately, the disease ddes not spread to other forest trees : 
nor has it been found on any other species of chestnut, either in 
this country or in Europe. 
In TZorreya of this month the fungus is described in detail, 
with figures showing its microscopic characters, as a new species 
under Diaporthe, a large genus of the pyrenomycetes. 
W. A. Morritt. 
OBSERVATIONS IN ECONOMIC BOTANY MADE 
AT OSCODA, MICHIGAN. 
During a stay of several days at Oscoda, Michigan, in the 
latter part of August, I was most impressed by the disastrous 
effects of the destruction of the great forests which once covered 
the surrounding region. These forests consisted of white pine 
(Pinus Strobus); red pine (P. resinosa), there called Norway 
pine, and presenting two distinct varieties to the lumberman, the 
“sap Norway,” its wood almost all alburnum and of little value, 
and ‘cork Norway,” with very little sap-wood, and _ highly 
esteemed ; and jack-pine (P. divaricata), a pitch pine of little 
value. With these were associated more or less hardwood tim- 
ber, chiefly white and black oak, sugar maple and birch, and, in 
the low grounds, other coniferous trees, chiefly spruce, tamarack 
and white cedar. 
In the cutting of these forests, the usual American custom of 
indiscriminate and total destruction was followed. The removal 
of the larger trees, with judicious replanting, would have pre- 
