There is also to be a line from Rodosto to Enos and Salonica; and from Salonica to Monastir, Valona, and Scutari in Albania. The line from Salonica to Monastir and Valona will be joined by a submarine cable crossing the Adriatic to Otranto, and carried on to Naples. It will have the effect of placing Southern Italy in communication with Constantinople, and also of reducing the cost of messages. A convention to this effect has been signed by a delegate of the Neapolitan government and the director-general of the telegraphic lines of the Ottoman Empire, touching this line to Naples. The ratification of the two governments will shortly be given to this convention.
A line from Scutari in Albania to Bar-Bournon, and thence to Castellastua, passing round the Montenegrin territory by a submarine cable. This line is already laid, and will begin working immediately on, the completion of the Austrian lines to the point where it ends.
A line from Constantinople to Bagdad. Three sections of this are being simultaneously laid down. The first from Constantinople to Ismid, Angora, Yuzgat, and Sivas: the works on this have been already carried to Sabanja, between Ismid and Angora. The second section, from Sivas to Moussoul: the works on this line are in a state of favorable preparation, and the line will be actively gone on with. The third section, from Bagdad to Moussoul: for this also the preparations have been made, and the works will begin when the season opens, the materials being all ready along the line. From Bagdad this line will extend to Bassora, to join a submarine cable to be carried thence to British India.
A projected line from Constantinople to Smyrna. For this, two routes are thought of: one, the shortest, but most difficult, would run from Constantinople to the Dardanelles, Adramyti, and Smyrna; the other, the longest, but offering fewest difficulties, would pass from Constantinople by Muhalitch, Berliek-Hissar, and Maneesa, to Smyrna.
A line from Mostar to Bosna-Serai. Mostar is already connected with the
Austrian telegraphs at Metcovich.
Other lines have been in the mean time completed and extended, and will soon be opened to the public. Thus, a third and fourth wire are being laid on the line from Constantinople to Rodosto; from the latter point three wires have been carried to Gallipoli and the Dardanelles, two of which are for messages from Gallipoli to the Dardanelles, and the third is to join the submarine cable connecting Constantinople, Candia, Syra, and the Piraeus. The communications between Constantinople and Candia would already have begun but for an accident to the engineer. Those with Syra and the Piraeus will begin as soon as the ratification of the convention entered into between the Ottoman and Greek governments on this subject shall have taken place. The laying of the cable between Candia and Alexandria, which has not yet succeeded, will be resumed this spring.
Thus, after the completion of these lines, Constantinople will be in communication with nearly all the chief provinces and towns of the empire, with Africa, and with Europe, by five different channels,—by the Principalities, by Odessa, by Servia, by Dalmatia, and the Kingdom of the Two Sicilies. With such a development of the system, it will be imperatively necessary to increase the telegraphic working-staff. Already the number of despatches arriving every day renders the service very difficult, and occasions much confusion and many grievous mistakes. Nothing is easier than to remedy all this by increasing the number of the employés.
The great distinguishing feature of the telegraphs used in Great Britain is, that they are of the class known as oscillating telegraphs,—that is, telègraphs in which the letters are denoted by the number of motions to the right or left of a needle or indicator. Those of France are of the class called dial telegraphs, in which an index, or needle, is carried around the face of a dial, around the circumference of which are placed the letters of the alphabet; any particular letter being designated by the brief stopping of the needle. A similar system has been used in Prussia; but, recently, the American, or recording instrument of Professor Morse, has been introduced into this, as well as every other European country; and even in England, the national prejudice is gradually giving way, and our American system is being introduced.
In America none but recording instruments have ever been used. Of these we have many kinds, but only five are in operation at present, namely:—The electro-magnetic timing instrument of Professor Morse; the electro-magnetic step-by-step printing of Mr. House; the electro-magnetic synchronous printing of Mr. Hughes; the electro-chemical rhythmic of Mr. Bain; and the combination-printing, combining the essential parts of the Hughes instrument with portions of the House. The Morse apparatus is, however, most generally used in this country and every other. Out of the two hundred and fifty thousand miles of electric telegraph now in operation or in the course of construction in the world, at least two hundred thousand give the preference to it.
Although the Morse apparatus is a recording one, yet, for the last six years, the operators in this country have discontinued the use of the paper, and confined themselves to reading by the ear, which they do with the greatest facility. By this means a great saving is made in the expense of working the telegraph, and far greater correctness insured; as the ear is found much more reliable in comprehending the clicks of the instrument, than the eye in deciphering the arbitrary alphabet of dots and lines.