In the Ader transmitter as many as twelve carbon pencils were employed, arranged in a series of two groups with six pencils in parallel in each group. These were supported at their ends in parallel carbon bars, which were carried by a nearly horizontal wooden diaphragm.
And all these groups, while talking among themselves, tried to keep near the commander-in-chief (whose bench formed the center of the gathering) and to speak so that he might overhear them.
Groups of singers stood outside the windows.
According to this the figures of combatants do not all face towards the centre, but are broken up, as in other early compositions, into a series of groups of two or three figures each.
By the entrance of amino or hydroxyl groups into the molecule dyestuffs are formed.