A Treatise on Telegraphic Communication, Naval, Military, and Political

Portada
Egerton, 1808 - 186 páginas
 

Comentarios de usuarios - Escribir una reseña

No hemos encontrado ninguna reseña en los sitios habituales.

Otras ediciones - Ver todo

Términos y frases comunes

Pasajes populares

Página 133 - We were entertained with the usual hospitality by Mr. Macdonald and his lady Flora Macdonald, a name that will be mentioned in history, and if courage and fidelity be virtues, mentioned with honour.
Página 135 - ... system of methodized signals, by means of which, divisions of fleets, as well as single ships, could be directed to act in any specific manner. Previous to his time, the principles of co-operation, connected procedure and changes of position, were very imperfectly, if at all understood. When once an action commenced, every idea of regulating its farther progress was abandoned, the degree of naval science, then...
Página 37 - Brumor's account of the theatres of the Greeks, it is stated that fire-signals were used to communicate the events of wars, and likewise to direct the commencement of battles. A priest, crowned with laurels, preceded the army, and held a lighted torch in his hand. He was respected and spared by the enemy, even in the heat of battle. Hence the old proverbial expression for a complete defeat, that ' even the very torch-bearer had not been spared.
Página 36 - ... mentioned. Homer is the first to mention the art of telegraphing. He compared the lambent flames which shone around the head of Achilles, and spread their lustre on every side, to the signals made in besieged cities by clouds of smoke in the day-time, and by bright fires at night, as certain signs calling on the neighbouring states for assistance, or to enable them to repel the powerful efforts of the enemy. Julius Africanus minutely details a mode of spelling words by a telegraph. It appears...
Página 134 - ... latitude was attained. James II., when admiral, was the first who introduced a system of methodized signals, by means of which, divisions of fleets, as well as single ships, could be directed to act in any specific manner. Previous to his time, the principles of co-operation, connected procedure and changes of position, were very imperfectly, if at all understood. When 'once an action commenced, every idea of regulating its farther progress was abandoned, the degree of...
Página 138 - The numerical mode was -happily invented to obviate all these difficulties, by the principle of simplification which is its distinguishing characteristic^ The nine numerals, and Cipher, are represented^ each, by a different flag. To repeat...
Página 136 - This groundwork, resting upon unchangable general principles, though it may have received many additions, and may have been simplified by the numerical order of signals, remains to this day as the basis of evolutions, and the germ from which has sprung the British naval code. Le P. Hoto, in his "Art des Armes Navales...
Página xxiii - there is seldom reason to complain of its tediousness; and on the other hand, as the alphabetical key is soon retained by heart, the person who writes and reads the messages can perform the operation with nearly as much celerity as in common writing.
Página xxii - The Lords Commissioners of the Admiralty gave a decided preference to the alphabetical mode, and the experience of many years has abundantly justified that preference.
Página 136 - ... situations in respect to the enemy, their number, and the state of the wind and weather. His fighting and sailing instructions, classed according to their various heads, were referred to by a specific signal, pointing to each movement and manoeuvre in the class.

Información bibliográfica