I have often, during the last part of a hatch, when the thermometer was ranging from 70 to 80 degrees outside of machine, placed a glass on the hottest part of the boiler, where but one lamp was dimly burning, carefully covering the glass. In that position it would register perhaps 96 to 98 degrees, while a glass inside the machine, and on the eggs, would register 103 degrees, proving beyond a doubt that the eggs, by their own caloric, were not only heating the egg-chamber, but contributing their quota towards heating the water in the tank. Now, who will pretend to say that a glass hanging above the eggs will give the correct heat of the egg after circulation begins. So that, even in cold weather, the amount of oil consumed during the last week of the hatch is less than half the amount required during the first part. The operator must not expect the eggs to heat up at once. On the contrary, they will cool the air in the egg-chamber very sensibly, though they will not affect the heat of the water in the tank. It will be from five to eight hours before they arrive at their normal heat. How to Turn Eggs. At the end of forty-eight hours they may be turned. This should be done by gathering up the eggs at the end of egg-tray and placing them upon the eggs in centre of the tray, rolling the centre ones back to the end of the tray. The tray should be reversed, and the same thing done to the other end. It is not necessary that the eggs should be completely reversed,--simply change the position, rolling over one-half or one-third. The egg-trays should always be turned end for end, and changed from end to centre of machine. This is necessary in case there should not be a uniform heat in egg-chamber, as it will equalize matters, and, in a measure, obviate the difficulty. Now, all this, though it takes some time to describe it, can be done very quickly, requiring only a few moments for each machine. I usually allow about ten minutes for each 1,000 eggs, though it can be done much quicker if one is in a hurry. I am often requested by people to put in patent automatic egg-turning trays in my machines, it would so simplify matters. I reply: