Some bell-flowers close at night; others hang the mouths downwards; others nod and turn from the wind; stamens bound down to the pistil in Amaryllis formofissima; pistil is crooked in Hemerocallis flava, yellow day-lily Thorns and prickles designed for the defence of the plant; tall Hollies have no prickles above the reach of cattle

Bird-lime from the bark of Hollies like elastic gum

Adansonia the largest tree known, its dimensions

Bulbous roots contain the embryon flower, seen by dissecting a tulip-root

Flowers of Colchicum and Hamamelis appear in autumn, and ripen their seed in the spring following

Sunflower turns to the sun by nutation, not by gyration

Dispersion of seeds

Drosera catches flies

Of the nectary, its structure to preserve the honey from insects

Curious proboscis of the Sphinx Convolvoli

Final cause of the resemblance of some flowers to insects, as the
Bee-orchis

In some plants of the class Tetradynamia, or Four Powers, the two shorter stamens, when at maturity, rise as high as the others

Ice in the caves on Teneriff, which were formerly hollowed by volcanic fires

Some parasites do not injure trees, as Tillandsia and Epidendrum

Mosses growing on trees injure them

Marriages of plants necessary to be celebrated in the air

Insects with legs on their backs

Scarcity of grain in wet seasons

Tartarian lamb; use of down on vegetables; air, glass, wax, and fat, are bad conductors of heat; snow does not moisten the living animals buried in it, illustrated by burning camphor in snow

Of the collapse of the sensitive plant

Birds of passage

The acquired habits of plants

Irritability of plants increased by previous exposure to cold

Lichen produces the first vegetation on rocks

Plants holding water

Madder colours the bones of young animals

Colours of animals serve to conceal them

Warm bathing retards old age

Male flowers of Vallisneria detach themselves from the plant, and float to the female ones

Air in the cells of plants, its various uses

How Mr. Day probably lost his life in his diving-ship

Air-bladders of fish

Star-gelly is voided by Herons

Intoxicating mushrooms

Mushrooms grow without light, and approach to animal nature

Seeds of Tillandsia fly on long threads, like spiders on the gossamer

Account of cotton mills

Invention of letters, figures, crotchets

Mrs. Delany’s and Mrs. North’s paper-gardens

The horologe of Flora

The white petals of Helleborus niger become first red, and then change into a green calyx

Berries of Menispernum intoxicate fish