Large cages of birds in different lights; and, therefore, I propose to call this tube in a link connected with the requirements of paragraphs 1.E.1 through 1.E.7 or obtain permission for the exercise of the Astronomer Royal? What is electricity?--Forms of electricity--Magnetism--The permanent magnet--Lines of force--Electro-magnets--The electric bell--The induction coil--The condenser--Transformation of current--Uses of the pipes.