owners and the public. It is in use over land, contrary to statements of those who are foolishly trying to belittle the art, and as an example we will site the government stations at Washington, D. C., and Brooklyn Navy Yards, which stations are in constant communication both day and night, and can work with each other regardless of the interference of surrounding stations. This is by no means the limit of what can be done over land.
Regardless of any statement to the contrary, wireless telegraphy is not limited to one line of communication between two points. It may be duplexed; that is, two or more messages may be sent and received simultaneously. It can successfully compete with cables on all points.
It is true that some of the stock companies have established communication over great distances of water, but results obtained with such installations should not be accepted as conclusive proof of what can be done, as these stations were installed more with an object of bolstering up their stock, than any intention of establishing a sound commercial business.
The high-power stations of these companies are equipped with crude apparatus, that is more crudely installed, and depend more on the high power of their stations, than on perfected apparatus, to establish communication. Stations of one of the stock companies are equipped with 500-horsepower apparatus, which is used to communicate over a distance of less than 2000 miles, while