The general system of home making-ice refrigerators consists of the brine tank with copper coils within, a motor-driven compressor and a condenser of copper piping. The compressed liquid passes through an expansion valve into the brine tank where the pressure is reduced and it changes into a gas, flows out through and is condensed by the condenser, changed back into a liquid, is pumped back again by the motor and starts cycling again--indefinitely. In the best ice-making plants there is a heat control which turns on the motor when the temperature in the refrigerator gets too high and turns it off when it is sufficiently low. In one refrigerator there is a device by which the food compartments are kept at any temperature you desire, usually around 40°, while the temperature of the ice-making compartment is never allowed to rise above 20°. By this arrangement it is possible, and very often the case, that ice will be made in the ice compartment without running the electric motors for hours, while food is kept in the food compartments at slightly above freezing point. Fancy the health insurance that the best ice-less processes guarantee in the home--infant’s food, for example, can be absolutely fool-proof. Although the above technical libretto is of some use, the things that most people want to know and are asking are these: 1. Is ice making at home practical? 2. Is it messy? 3. Can I use my old refrigerator? 4. Are they to be had in a special refrigerator? 5. Will I save money? 6. Will it save time and annoyance? 7. What’s the use anyway? A good refrigerator is a jewel, and it is the first requisite to be considered. It must be insulated well enough to keep out hot air and hold in cold. It must be seamless and smooth in its linings. The air circulation must be continuous. The temperature inside must never be higher than an average of 45° and rarely that. In such a refrigerator one should be able to keep matches dry and butter must never absorb any of the charm of the onion. If you have such a refrigerator, keep it by all means, and install the ice-making machine. The installation is simple, and the initial expense is readily made up in the future saving of ice consumption. But do not install an excellent ice machine in a poor refrigerator, as the electric bills will climb the Alps. Yet even in a poor refrigerator the refrigeration bills are lower than if you had iced refrigeration.