Chef Adolphe Meyer in his little book on eggs, among other methods of cooking, aludes to two that might be tried by "campers." eggs cooked in hot ashes

"In countries where wood fire is constantly used, the cottager half buries his eggs in an upright position in hot ashes, upon the hearth, and when a clear drop oozes on the top of the shell the eggs are fit to be eaten." eggs cooked without fire

"The most singular method of cooking eggs is that attributed to the Egyptian shepherds, who, it is said, were able to cook eggs without fire, by placing them in a sling, and whirling them around so rapidly that the friction of the air heated them to the exact degree required."

Aside from the above and other singular exceptions, and discarding combinations of egg, milk, starchy ingredients, etc., eggs are cooked in one of the following ways:

Ways Of Cooking Eggs