All those insects mentioned here have so arranged their life histories that they come into existence exactly at the proper season. The warmth of the sun, which opens the apple buds ever so slightly, stirs also the egg of the mite, the egg of the beetle, or the hibernating weevil, so that all these insect populations come into full active life just when they can do the most damage.

But one must not stop there; the bird population is also ready, and is building its nests and feeding its young, just so soon as the insect swarms are at their thickest and most dangerous stage.

Man walks clumsily through this intricate tangle of living plants and animals: he sets his big foot on a hedgehog (good for the insects), or on a mole (so much the better for wireworm), collects plovers' eggs (to the great help of every insect), shoots an owl (to the delight of voles and mice) or a whole brood of partridges, and in other ways makes a—— we had better say, shows that he is not so clever as he supposes himself to be.

CHAPTER XXIV
RUBBER, HEMP, AND OPIUM

Effects of opium—The poppy-plant and its latex—Work of the opium-gatherer—Where the opium poppy is grown—Haschisch of the Count of Monte Cristo—Heckling, scotching, and retting—Hempseed and bhang—Users of haschisch—Use of india-rubber—Why plants produce rubber—With the Indians in Nicaragua—The Congo Free State—Scarcity of rubber—Columbus and Torquemada—Macintosh—Gutta-percha.

SUPPOSING that in China or Japan you meet a native who shows the following symptoms:—

(1) Eyes hollow and surrounded by a bluish margin; (2) pupils much dilated; (3) with a stupid appearance; (4) with an emaciated body; (5) of unsteady and staggering walk; (6) with a dreamy disposition;—then, you may be sure that he is an opium-smoker. In some of the Chinese provinces every man smokes ·03 to ·07 ounce of opium daily, but those who indulge to excess consume ·3 or even ·6 ounce. It is an excellent medicine when employed in a lawful and justifiable manner, for it calms the spirits and makes one sleep. But its use is always dangerous, even when employed in very small quantity, as in laudanum and morphia.

In the Fen country in England there used to be a very large sale of laudanum pills which keep off asthma and rheumatism, but even there it is a dangerous remedy, for it is only too easy to fall under the control of this drug either by injection of morphia, or by eating or smoking laudanum or morphia. De Quincey's Confessions of an Opium-eater and Kipling's Gate of the Hundred Sorrows give a lurid picture of the ruin of body and soul brought about by opium.

It is produced from the heads of the Opium Poppy (Papaver somniferum). Any poppy (or indeed any plant of the Poppy order) when scratched or wounded exudes a thick white or orange milky fluid. This is called "latex" (or milk); it is always more or less poisonous, and generally contains some sort of resinous matter. Thus when the plant is scratched or pierced, a drop of this milky latex comes out and at once hardens over the wound. Of course the plant is much benefited by this, for any destructive insect, unless it is a confirmed opium-eater, will be poisoned or killed; then also, if wounds are caused by wind, heavy rain, or animals passing, the scar is at once healed over and covered by the hardened opium, so that no dangerous fungus spores can get in to attack the plant. There is a mildew fungus and also a smut fungus (Entyloma) which attack the poppy, but both these enter by the stomata and live between the cells of the plant.