Sage (_Salvia officinalis_), strange curved stamen, 119;
nature's arrangement, 112.

Salvia, its welcome to the bee, 117.

Self-fertilization, 141.

Sheep-spit, 80.

Showy orchid (_H. orbicularis_),194.

Snorting war-horse, 18.

Solitude, the pleasures of, 3.

"Solomon's ant," 152.

Spectabilis, orchid, 182;
its favorite haunt, 195.

Spiders, _agalena_, _epeira_, _argiope_, 8;
a two years' span, 7;
a silken vortex;
miscellaneous food, 8.

_Spiranthes_, "Lady's-tresses," 218.

Sprengel, Christian Conrad:
--Inspiration from the wild geranium, 108;
on the mystery of color, 112;
theory of fertilization;
a poser to Linnaeus, 113;
his wrong theory, 114;
divining half the truth, 176;
assumption disproved, 178.

Spume-bearer (_Aprophora_), its domicile of suds;
wonderful power of jumping, 82.

Starling, dispossessing woodpecker from nest, 43.

Studio Company:
--"Tumultuous privacy"; contested territory; snickering squirrels, 4;
selected food; unsymmetrical carpentry; drone of bees; carol of birds;
flurry of swifts; accompaniments to my toil, 5;
wild fox; pet chipmonk; pet toad; his lightning tongue;
home in a bowl, 6;
an old friend, 9.

Summer yellow-bird (_Mnio-tiltidae_), 47.

Sweet-pogonia (_P. ophioglossoides_), 145.

Swift, Jonathan, on parasites, 44.

Tennyson, quoted, 24.

"The Secrets of Nature in Forms and Fertilization of Flowers Discovered,"
Sprengel's work, 113.

Thevenot, concerning the thrift of insects, 152.

Tiger-beetle (_Cicindela_), 68.

Toads, 6.

Toad-spit, 80.

Tree-hopper, 93.

Venus's-slipper (Cypripedium acaule), 205.

Vireo, abandons its nest, 45.

Wasps:
--Wren, 10;
microscopic, 45;
tiny black, 69;
digger, 72, 162;
orange-spotted, 79;
brown; mud, 161.

"Waxwork" bittersweet (_Celastrus scandens_), 88.

Welcome of the flowers:
--The function of the stamen, 106;
difference in cells, 107;
condition of the flower, 108;
physiological features; recognition of sex in flowers, 109;
exchange of courtesies; each flower a law unto itself, 117;
action of "jack-in-the-pulpit"; cypripedium and aristolochias;
peculiarity of the sage, 119;
queer stamens; nature's arrangement, 121;
cross-fertilization insured, 122;
showers of laurel pollen; curio