Part 20

Platanthera, orchid group, 192.

Pliny, 23.

Pogonia ophioglossoides, sweet-pogonia, 145.

Polistes, brown wasp, 161.

Primrose, evening, 118.

Psychid: --A sack-bearer; drags its house with it; feeds on seed-pods, 83; winter quarters of silk, 84.

Queer Little Family: --Tree-hopper (Membracis binotata); a singular entertainment; graceful curves, 87; a branch in masquerade; queer thorns, 88; a sudden disappearance; animated thorns; like a covey of quails, 89; like "Bob White," 90; singular agility; queer anatomy; always ready for flight, 91; fondness for locust and oak-trees, simulating the color and character of the branches, 92; manner of sitting on the branches, 93; always headed towards the top; tiny tufts of cotton, 94; color and size of the tufts; a mere frothy shell; a riddle, 95; its relations, 96; an investigation, 97; its technique, 98; aerated cement; froth-house builder, 99; period of hatching, 100; a house for the winter; not a wanderer, 101.

Ragged Orchid (H. lacera), 200.

"Rattlesnake-plantain," 213.

Rudbeckia hirta, cone-flower, 138.

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.