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:
"So it would; and when you can produce a machine with a perfect uniformity of heat in the egg-chamber, I should be most happy to use an automatic tray, but I have never yet seen that machine." In our own double-cased Monarch, in cold weather, there is at least one degree difference between the end and centre of egg-tray. In single-cased machines this difference must be largely increased, and in automatic trays the eggs must necessarily remain where they are placed through the entire hatch. Now, under these conditions, if the heat is right in the centre of trays it must be all wrong in the ends. The hatch will be protracted long after the proper time, and if those on the ends of trays come out at all it will be forty-eight hours behind time and with weakened constitutions, keeping one in constant stir with their sickly plaints. It is needless to say that there is a great mortality among birds of that description, and at the end of ten days they are usually among the things that were.