The moths and butterflies could be no living for Johnny. To begin with, though he was always ready to help in the hatching, killing, setting, and what not, he was no born insect-hunter, like his grandfather; and then the old man had long realised that the forest was growing a poorer and poorer hunting-ground each year, and must some day (after he was dead, he hoped) be no longer worth working. People were hard on the hawks, so that insect-eating birds multiplied apace, and butterflies were fewer. And there was something else, or so it seemed—some subtle influence from the great smoky province that lay to the south-west. For London grew and grew, and washed nearer and still nearer its scummy edge of barren brickbats and clinkers. It had passed Stratford long since, and had nearly reached Leyton. And though Leyton was eight miles off, still the advancing town sent something before it—an odour, a subtle principle—that drove off the butterflies. The old man had once taken the Emperor Moth at Stratford, in a place long covered with a row of grimy little houses; now the Emperor was none too easy to find in the thickest of the woodland. And, indeed, when the wind came from the south-west the air seemed less clear, in the old man’s eyes, than was its wont a dozen years back. True, many amateurs came with nets—boys from boarding-schools thereabout, chiefly—and did not complain. But he, who by trade had noted day by day for many years the forest’s produce in egg, larva, pupa, and imago, saw and knew the change. So that butterflies being beyond possibility as Johnny’s trade, his grandfather naturally bethought him of the one other he himself was familiar with, and spoke of the post-office. He knew the postmaster at Loughton, and the postmasters at other of the villages about the forest. By making a little interest Johnny might take the next vacancy as messenger. But the prospect did not tempt the boy. He protested, and it was almost his sole contribution to the daily discussion, that he wanted to make something; and there was little doubt, if one might judge from the unpleasing ships and figures in coloured chalks wherewith he defaced whatever offered a fair surface, that he would most like to make pictures. He never urged the choice in plain terms, for that were hopeless: but both his mother and his grandfather condemned it in all respects as though he did.