-------------------------------------------------------------- How many Dials? | -------------------------------+------------------------------ Their Diameter? | -------------------------------+------------------------------ Their Elevation, or distance | from the ground? | -------------------------------+------------------------------ If to be Illuminated? | -------------------------------+------------------------------ Of what material is | Dial to be? | -------------------------------+------------------------------ Can the Movement be | placed on a level with the | centre of Dial, if not, how | far above or below it? | -------------------------------+------------------------------ Is the Clock to strike? | if so, on what size or | weight bell? | -------------------------------+------------------------------ If to strike half-hours | or quarters, or how many | bells, and their sizes and | weights? | -------------------------------+------------------------------ What number of feet | can be obtained for descent | of weights? | -------------------------------+------------------------------ What length of Pendulum | will the building | admit of, and is a compensating| Pendulum required? | -------------------------------------------------------------- A FEW DATES AND DETAILS FOR ALMANAC READERS. The following data may be found useful in studying an Almanac. The columns for SUNRISE AND SUNSET are nearly the same year after year for any given place; for by the alteration of styles and the day allowed at Leap Year the civil and astronomical year are almost exactly the same; but the difference in latitude of different places makes a London almanac useless for sunrise and sunset, say at Edinburgh. The sun rises at each place to a greater height in June than in December, but he is always at a less height in Edinburgh than in London both in winter and summer, Edinburgh being farther than London from the equator, where the sun is more immediately overhead. The RISING AND SETTING OF THE MOON vary greatly day by day. The moon is constantly moving eastward, and she is not moving in the same path with the sun; the latitude and longitude of the observer's position, the place of the moon in her orbit, the rapidity of her motion, and other particulars, are to be taken into account in computing her rising and setting.