50 Rhodora eee 
Scotia “it is found only in special localities on poorest sites in Col- 
chester county.”! In New Brunswick, too, the tree is localized and 
Robert Chalmers correctly understood the situation when he wrote of 
eastern New Brunswick the following accurate account: 
“In New Brunswick, as indeed, in all glaciated countries, however, 
we cannot determine the exact limits of the areas of the forest growth 
affected by the geological formations. On the hills and ridges under- 
lain by limestones, we meet with maple and birch groves, intermixed 
occasionally with spruce. The Cambro-Silurian and the old crystal- 
line belts of rocks traversing the province from the Baie des Chaleurs 
to the Chiputnecticook Lakes, seem also to mark a boundary in the 
forest distribution. North of this lies the great area of Silurian lime- 
stones, south of it the Carboniferous sandstones. Owing to the 
larger extent of country which these formations occupy, the soil 
necessarily bears a closer relation to the underlying rock, and is less 
intermixed with extra-limital drift; consequently the vegetation 
and forest growth upon these areas ought to show the effect of each 
particular kind of soil upon the flora of the country. Have these 
districts any peculiar forms in their floral productions? 
“On the Silurian limestones there is observable a paucity of erica- 
ceous plants, of scrub pine [P. Banksiana] and black spruce, and an 
almost entire absence of hemlock, all of which are abundant on the 
Carboniferous sandstones, the latter tree, indeed, reaching fuller 
development on these as regards size and number than elsewhere in 
the province. White spruce, fir, white pine, the paper birch, and 
and Commelina) are in southeastern New York usually considered merely garden-escapes and 
tea Sheets 
more, of the 10 *Indicetor Species” Ppa 1{ ) 
necticut, 2 wipyade 



an am statement as that “Prrcu tor (Pina rigida) . . . ccaRS 
in the part, and in the ntains”; W th 
fact, the Pitch Pine is a ain ing ew nd from ae ~ 
Vermont it is found only “in the northern portion of the Champla alley” and “ale 
necticut Valley as as Wells River” (Burns & Otis); but, although the Bit 
F ox ew England, it should pe a aa 
that the altitude is slight, that this sandy region has to ta coastal plain Hora © 
grea 
tt New England is nearly 150 miles farther north than Lake of thel 
In New Hampshire Pitch Pine follows north “along the Merrimac valley to the ogee & 
White mountains and up the Connecticut valley to the mouth of the Passumsic” (D ranites 
Brooks) ; in Main ixth of the s' tate and the the coastal 
east to Mt. Desert Island. It is quite unknown among the higher m jountains. 
‘ Fernow, Forest Conditions of Nova Scotia, 11 (1912). 





