IV 
INDEX. 
Page. 
Sarothamnus scoparius. 64, 69 
Scrophularia nodosa . 72 
Setaria glauca. ’ 56 , 139 
italica. 139 
vindis. 139 
Shepherd’s purse. 55 , 88 
Silphium integrifolia. 191 
perfoliatum. 191 
Snow-ball. 96 
Snow-berry. 99 
Soft maple. 47 
Solidago rigida. 190 
serotina. 190 
Sonchus oleracea. 167, 190 
Sorghum. 88 
Spanish needle. 59 
Spirea almaria . 65 
Spotted spurge. 56 
Spruce, Black . 117, 156 
Squash .. .. 67 
Stinging nettle. 55 
St. John’s-wort. 108 
Strawberry. 68 
Sugar maple. 18 
Sumac ... . 152 
Sweet flag.14, 15 
Sweet pea. 65 
Symphoricarpus vulgaris. 90 
Tamarack. 117, 157 
Tanacetum vulgare. 68 
Tansy. 68 
Thistle. 100 
Thorn. ft. 101 
Tomato.. ! _ 73 
Touch-me-not. 98 
Tufted vetch. 87 
Tulip. 81, 188 
Tulipa gesneriana...•. 81 
Ulmus americana. 112, 196 
Urtica dioica. . 65 
a 
% 
i 
3 
J 
£ 
><• 
'1 
a 
9 
3 
Verbena.,. . 63 
Vernonia fasciculata. 97 
lindheimeriana. 190 
noveborascensis. 190 
Vetch, Tufted. 88 
Viburnum opulus, var. americana. 97 
Vicia cracca. 88 
Walnut.... 
Wheat . 
White elm.. 
oak . 
pine.. 
Willow. 
(fray. 
Witch-hazel 
Wormwood. 
. ..113, 141, 199 
. 51 
. 136 
. 118 
.117, 137, 140 
63, 105, 115, 119 
. 116 
.207 
. 69 
