ager. 
38 BOTANICAL GAZETTE [JANUARY 
Fires prevent the young growth of the white pine and also prevent 
humus formation. Thus, as long as the latter are allowed to continue, 
the water capacity is not apt to rise and the growth of nitrifying — 
bacteria is not apt to increase; but the presence of a few white pine 
seedlings is evidence that the species can grow if protected. Indeed 
the best young stands of any kind that I have seen are of this tree, f 
and they promise exceedingly well for reforestation. 
As has been said, the Norway pine is coming in quite freely in 
the areas originally covered by this species and the white pine. The 
degeneration goes no further, however; I have almost never seen even | 
individual jack pines appearing in any of these areas. Indeed, | 
there is some evidence that the Norway pine is gradually advancing ; 
its seedlings into the areas held by the jack pine. 
The hardwood forest reappears quite rapidly when cut. This © 
is doubtless in part due to the fact that this material does not burn ~ 
so readily nor so violently as do the pines. The scattered white , 
pines which formerly characterized some of these forests in the eyes | 
of the lumberman are not returning. They are perhaps only a relic 
of a past generation of forest.2° Hemlock is reproducing well and 
will return with the beech and maple if through lack of humus the 
soil does not become too dry for the seedlings. The sugar maple is 
the best for reclaiming cut-over lands. Its seedlings stand close 
together and do not seem to suffer from one another’s shade. : 
The work of SHERRARD?! in this region resulted in a map and | 
statistical study of the tree growth of township 25 N., R. 4 W, as 
well as a general discussion of the forestry conditions of the reserve- 
The township thoroughly studied by this author originally contained 
practically no white pine, but the other types are well represented. ; 
SHERRARD’S “oak flat” and “oak ridge” are all original Norway 
pine land. Forstatistics of saeisite etc., the reader is referred to his | 
paper. | | 
2) caeSep the ‘eutline’s Kank county paises, loc: 08; ako Wanrvoxn, BN. TH 
genetic ees ee forests of southern Michigan. Bor. Gaz. 31:289-325- 
2 2* SHERRARD, iT es nmnian eared sus Report Mich. Foresty : 
