In using the Morse alphabet the "red" represents the dot and the "white" the dash. Coston signals and other similar lights are best suited for preconcerted signals. VERY'S NIGHT SIGNALS. The navy signal book is used, to which the following explanation refers: The letter R stands for red and the letter G for green, and each letter designates a separate star or cartridge. Bracketed stars are a pair of different colors, discharged together from two pistols. The system is based on the Army and Navy Code, red representing "1" and green "2." 1--RRRR. 2--GGGG. 3--RRRG. 4--GGGR. 5--RRGG. 6--GGRR. 7--RGGG. 8--GRRR. 9--RGGR. 10--GRRRG. Affirmative, or "Yes" RGRG Negative, or "No" GRGR Numeral GRGG Interrogatory RGRR Annulling RRGR Divisional point, date, designator, or interval GGRG {R} Telegraphic dictionary, { } bracketed. {G} {R} Geographical list, { } followed by a rocket. {G} {R} Boat signals, rocket followed by { } {G} {R} {R} Navy list { } { } {G} {G} General call, rocket followed by G. Message call, G without the rocket. The squadron, division, section, or ship's call, the "number" of squadron, division, section, or ship. Answering, or "I understand" R Repeating, or "I do not understand" G Danger or distress, R repeated several times in quick succession. ROCKET SIGNALING. In general, rockets and shells are best used in displaying preconcerted signals. Sequence rockets may also be used to display different colored lights in sequence to represent letters or numerals of the army and navy alphabet. The method of attaching the sections in the base of the sequence rocket is described in Chapter III. In using sequence rockets in this manner, the element "1" of the army and navy alphabet is represented by a red star, while a white star represents the element "2." To send the letter "A" a rocket showing two white stars is sent up. If "B" is to be sent, a rocket showing white-red-red-white is discharged. Each star burns for four to six seconds, and there is a slight interval between the visibility of each star. Between two or more stars of the same color, as "A," "N," "D," "dummies," which show no light and carry the fire to the next star to be ignited, are employed.