Scientists thiïik that death by eleotticity or lightning is painless. They do not know tliatit is so, bnt iufer that it is from these f acts : The nerves conimnuicate the sensation of pain by their vibrations or moverneuts, which are at the rate of 98 feet per f-econd. Eleotricity moves in a copperwire at the rate of 288,000 miles per secoud. Uesice it is probable that a stroug current of electricity kills a man .before his nérvea can make him conscions of the shock. Professor Tyndall, while lecturing at the Royal institution, Loudon, accidentally touched with hisshoulder the conductor leadiiig from 15 Leyden jars, charged with electricity. He thus describes the effect on his body: "I am extremely sensitive to elec-tricity, yet a charge from such a powerful battery as 15 jars geemed to have no disastrons effect upon me. I stood perfectly stil], woudering that I did not feel it, but I knew something had occorred. "After standing for a moment or two I seemed to open my eyes, which probably were open all the time. I saw' a confused mass of apparatus about me. I feit it necessary to reassure tbepeople before me, so I said : " 'Over aud over again I have wanted this battery to be discharged into me, and uow I have had it. ' "Altbough 1 appeared unaffected, really the optie nerve in me was so affected that I saw my arm severed from my body. I soon, however, recovered proper siglit and saw that I was all right. " The battery was not powerfnl enongh to cause death, nor did it cloud Professor TyndaU's intellect, while distorting bis visión, but he feit no pain, though the shock affected him, because thenervons agency, by wbich the cousciousness of pain is excited, traveled like a tortoise, while the e lectric current ran like a hare.