Our well, in the western part of the town, had been dug some six feet into the solid rock and an inexhaustible supply of the coldest water secured. We invited our neighbors, those living on both sides of us, as well as at some distance from us, to come and draw all the water they wanted, remarking that they might now and then draw up a small frog, originating therein, but that, by fishing him out of the pail, he would make his way to the neighboring streams not dry, and would flourish well enough as one of the _Rana_ family. It was only to our more intelligent neighbors (such as Mr. Bishop) who had read our work on "Life," that we stopped to explain this phenomenal fact. And so of all life, wherever it appears, whether vegetable or animal. Our experiments with mosquitoes are equally conclusive. Three years ago we took two barrels of rain-water from our cistern, tightly covered; one barrel we left open to the warm sun and air, and the other we covered with the finest mosquito netting. The barrel left open was soon thronged with mosquitoes, constructing their little rafts of eggs and paving their way for the swarms of young wigglers that in the course of a week or two made their appearance in the open barrel in immense numbers. The process by which these wigglers hatch out into mosquitoes is an interesting one, and will bear the closest study, as well as scientifically pay for watching the operation. At the proper time they come to the surface of the water, undergo a palpable modification in their structure, and beautifully burgeon forth into the tormenting little insects that they are during the summer and autumn months in our Northern climate. The object of the covered barrel was to ascertain whether we could reach the conditions favorable for the development of this little pest of the _Culex_ family, independently of the eggs of the insect itself. This required some patience and not a little care. We knew that an egg dropped through the interstices of the netting would sink to the bottom of the water and fail to germinate, as every scientist understanding the process well knows. It must be floated on the water at first, or until it reaches the point of development into a wiggler. The first step in the process of its life is as cunningly devised as the second, and the second as the third, until the full-fledged mosquito is reached.