Poor, little Mrs. Warbler! She tried with all her strength to push the egg out of her home, but without success. So, what do you suppose she did? Why, she just built another nest on top of the old one! It was a great deal of trouble, and the young Warblers tried her patience sorely, by persisting in pulling at the threads and straws, as she wove the frame-work of her new dwelling. "Labor is its own reward," however, for there was not a happier couple in all bird land than Mr. and Mrs. Yellow Warbler, when they brought their admiring friends and relations, to see the young Warblers, in the two-storied nest. INDUSTRY WHEAT HARVESTING. J. F. STEWARD. CHAPTER I. We have been told, "Ye cannot live by bread alone," which is no doubt true, but aside from the use of animal flesh as food, bread in some form has played the greatest part in sustaining mankind. There have been found, on every continent and every island of the globe, rude stone implements that tell, by form only, of their possible use. We read the story of pre-historic relics largely by comparison with modern things, and hence judge that the crescent-shaped flint implements, serrated upon their inner edge, to be seen in the British Museum and elsewhere, may have been used by the savages as reaping hooks. The natural habitat of wheat must necessarily remain a matter of dispute, for history cannot tell us of the time when the wild grain began to be cultivated by the savages, whose traditions are silent, nor when it was introduced into the various countries. The first harvest scenes depicted are found upon the stones of ancient Egypt, representing slaves with reaping hooks, at their tasks, scenes cut there before the time of Moses--long before the exodus. In the ruins of Egypt bronze reaping hooks have been found, differing little from those now used for trimming lawn hooks. In the sediment of Lake Neuchatel, in Switzerland, where have been discovered the remains of an ancient and forgotten people, whom we name merely "the Lake Dwellers," wheat and other grains have been found, and also reaping hooks of bronze; and from the bogs of the Scandinavian countries, where, in conformity with religious rites, were thrown prized articles, upon the death of their owners, sickles have been taken. From the time of bronze in Egypt, to the centuries following the dark ages, the reaping hook was probably the only implement used in the harvest. When comes the beginning of the end of barbarism in a nation, then industrial progress germinates, and in proportion as barbarism has decreased, the efforts for improvements in methods adapted to reduce human labor have been successful. The cloud that cast its shadow over Europe during the so-called dark ages, practically suppressed all efforts, and it is only since then that the energies directed to mechanical progress have had a fair field.