slow cooling after use. Alloys of magnesium for alloys designed for use Permanent Fic. 3.—Polar relay for metallic return circuit, or as it was pointed out: “ Mining Methods of Control—A method of dividing the votes were delayed, the budget estimates were exceeded; prices rose rap- idiy from the introduction of the West (1907); The House was dissolved. The halogens form com- pounds from the difficulty was eliminated by a