There are literally more in a single month than the total number issued by the Patent Office up to 1859.

The Bell System has three hundred experts who are paid to do nothing else but try out all new ideas and inventions; and before these words can pass into the printed book, new uses and new methods will have been discovered.

There is therefore no immediate danger that the art of telephony will be less fascinating in the future than it has been in the past.

It will still be the most alluring and elusive sprite that ever led the way through a Dark Continent of mysterious phenomena.
There still remains for some future scientist the task of showing us in detail exactly what the telephone current does.

Such a man will study vibrations as Darwin studied the differentiation of species.