hornblende
alluvial soil
glacial till
stratified sands and clays
quartz
feldspar
calcite
gneiss
three-toothed cinqufoil
rock-tripe
limestone
shale
calcerous bog
glatiation
the water cycle
marl sedge (composed chiefly of shells)
the shale rocks of the Hudson River Series often develop a slaty cleavage… and fertility of the derived soils is variable, though decidedly on the poor side.
quartzite
wintergreen
checkerberry
teaberry
mountaintea
the mountain laurel is a frequent companion
Relation of Plants to Geology and Soil
barley oats timothy rye wheat alfalfa
Friends and Enemies of the Orchard
Fertilization of the Apple
Life in the Soil
Cycles of Nutrition and Decay
Structure of a Bean Plant
From Field to Lake
Life in Early June
Scavengers
Food Substances Removed from the Water
Microscopic Animals
Christmas Fern
Ground Pine
Black Birch
Redstart on Beech Tree
Wild Cherry
Striped Maple
Oven Bird
Heart-Leaved Aster
Flowers again appear in the woodland, mostly asters and goldenrods. These have formed their flower buds during the summer, and do not ordinarily carry them through the winter.
Winter buds of Dogwood
Plant Succession on Limestone
Progressive Changes after Fire, cattle grazing, and forest cutting
Indigo bird and nest
Fireweed
Fire Cherry
Aspen
Field Sparrow and Nest
Smooth Sumac
Blueberry
Plant Succession on Shale
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