England. Royal Observatory, Greenwich. It was founded for navigational purposes by King Charles II in 1675. New procedure to obtain photographs of thermometer alterations. Engraving. La Ilustracion Espa–ola y Americana, 1881.

17TH CENTURY • 17TH • 1881 • 19 CENTURY • 19TH CENTURY • 19TH CENTURY. • 19TH • 19TH-CENTURY • ACCURACY • AERIAL LADDER • ALTERATION • ARTFORM • ASTRONOMIA • ASTRONOMICAL OBSERVATORY • ASTRONOMICAL • ASTRONOMY • ASTRONOMY: OBSERVATORY • BOOTHS • BRITAIN • CALCULATE • CALCULATING • CALCULATION • CALCULATIONS • CHANGE DETECTION • CHILL • CHRISTOPHER WREN • CIENCIA • CLIMATE • COLD (WEATHER) • COLD • ENGLAND'S • ENGLAND • ENGRAVED • ENGRAVING (ARTWORK) • ENGRAVING • ENGRAVING. • ENGRAVINGS • ETCHING • EUROPA • EUROPE • EUROPEA • EUROPEAN • EUROPEANS • EXTENSION LADDER • FIRE LADDER • FOOTMARK • FOOTPRINT • FOOTPRINTS • FOOTSTEPS • FOTOGRAFIA • GREAT BRITAIN • GREAT-BRITAIN • GREENWICH • HISTORIA UNIVERSAL • HISTORIA • HISTORY • HISTORY. • HOUR • INSTRUMENTAL • LA ILUSTRACION ESPA–OLA Y AMERICANA • LADDER • MARITIME NAVIGATION • MEASURE • MEASUREMENT • MEASURING • METEOROLOGY • METEOROLOGY       • MOMENT IN TIME • NAVEGATION • NAVIGATION • NINETEENTH CENTURY • OBSERVATORY • ORRERY • PHOTO • PHOTOGRAPH • PHOTOGRAPHIE • PHOTOGRAPHY • PLANETARIUM • PLANETARY • PRECISION INSTRUMENT • PRECISION • PRINT • PROCEDURE • REIGN OF CHARLES II OF ENGLAND • ROYAL GREENWICH OBSERVATORY • ROYAL OBSERVATORY • SAILING • SCIENCE • SCIENCES • SCIENTIFIC EQUIPMENT • SHED • SHIPPING • SHOEPRINT • SNAPSHOT • SNOW • SNOWCAPPED • SNOWSTORM • SPANISH AND AMERICAN ILLUSTRATION, THE • STAIR • STAIRCASE • STAIRS • STAIRWAY • STAND • STEP • STEPS • TECHNICAL • TECHNIQUE • TECHNOLOGY • TEHNOLOGY • TEMPERATURE • THERMOMETER • THERMOMETERS • TIME • TIME-MEASURING • TIMEKEEPING • TRACÉ • TREAD • U. K. • UNITED KINGDOM • WEATHER MEASUREMENTS • WEATHER STATION • WEATHER • WEATHER: SNOW • WINTER • WINTRY • XIX CENTURY • XVII CENTURY