An oblong coil about an inch in length is suspended from each end by thin strips of rolled German silver wire, one of which is connected with a spiral spring for regulating the tension, the other being attached to a torsion-head.
Temporary copings of wood, which may be fixed by means of permanent iron brackets just below the stone coping, are extremely useful in spring for the protection of the blossoms of fruit trees.
Intending to sacrifice the cow, he sent some of his companions to a neighbouring spring for water.
Every citizen capable of bearing arms must serve from his 30th to his 36th year in the second section, or territorial militia, which musters in spring for shooting-practice and in the autumn for field manoeuvres.
Thus in the case of a spring for which the values of the quantities were W =7 lb, n = 51, R = .30 in., .038 in., E = io,50o,000, the formula gives extension =1.764 in., while direct experiment gave extension =1.75 in.
