Among the signal events following in the train of this Comet there have been so many bloody massacres and appalling disasters that Halley’s Comet now has the ominous distinction of being the bloodiest of all stars of ill omen. Herewith follows the story of this Comet’s periodic appearances in history and of the events connected therewith, as traced back from its last return in 1835 to its first recorded entrance into the history of mankind. 1835-1836 Halley’s Comet last appeared in the Summer of 1835, and was seen until Spring of the following year. It was first discerned by Father Dumouchel with a powerful telescope from the observatory of the Collegio Romano in Rome on the night of August 6, 1835. Father Dumouchel, who had been watching for it many months, picked it up close to the spot in the heavens that Rosenberger, a German astronomer, had predicted for its appearance on that date. The last astronomer to see the Comet was Sir John Herschel, who observed it from the Cape of Good Hope until the middle of May, 1836. Other noted astronomers who made observations of it were Arago, Struve, Bessel, Kaiser, Sir Thomas Maclear, Admiral Smyth, Baron Damoiseau and Count Pontécoulant. This last astronomer, many years before, had computed the exact time of its coming and came within four days of it. For this brilliant feat Count Pontécoulant received a gold medal from the French Academy of Sciences. [Illustration: HALLEY’S COMET OF 1835. FROM A DRAWING BY ROSENBERGER.] The German astronomer, Rosenberger, who had likewise computed the Comet’s return, coming within five days of its passage nearest to the Sun, received a similar gold medal from the Royal Astronomical Society of Great Britain. Professor Struve, who studied the Comet through the great telescope at Dorpat in Russia, described it as “glowing like a red-hot coal of oblong form.” Bessel, who observed it from the Koenigsberg observatory in Northern Germany, described the Comet’s appearance as that of “a blazing rocket, the flame from which was driven aside as by a strong gale, or as the stream of fire from the discharge of a cannon when the sparks and smoke are carried backwards by the wind.” Struve at Koenigsberg and Kaiser at Leyden were the first to see the Comet with their naked eyes in the third week of September. Immediately after the Comet became generally visible in the Old World the bubonic plague, known of old as the “Black Death,” broke out in Egypt. In the City of Alexandria alone 9,000 people died on one day. By the Moslems this calamity was generally attributed to the evil influence of the Comet. In America the Comet became visible to the naked eye only late in the year. Then, on its approach to the Sun, it was lost to view and passed over to the Southern Hemisphere where it was next observed by Sir John Herschel in South Africa.