Ford’s Theatre—Its Interesting Memories—The Last Festivities—Assassination of President Lincoln—Two Years Later—Effects of “War, Disease, and Human Skill”—Collection of Pathological Specimens—The Army Medical Museum opened—Purchase of Ford’s Theatre—Ghastly Specimens—A Book Four Centuries Old—Rare Old Volumes—The Most Interesting of the National Institutions—Various Opinions—Effects on Visitors—An Extraordinary Withered Arm—A Dried Sioux Baby!—Its Poor Little Nose—A Well-dressed Child—Its Buttons and Beads—Casts of Soldier-Martyrs—Making a New Nose—Vassear’s Mounted Craniums—Model Skeletons—A Giant, Seven Feet High—Skeleton of a Child—All that remains of Wilkes Booth, the Assassin—Fractures by Shot and Shell—General Sickles Contributes His Quota—A Case of Skulls—Arrow-head Wounds—Nine Savage Sabre-Cuts—Seven Bullets in One Head—Phenomenal Skulls—A Powerful Nose—An Attempted Suicide—A Proverb Corrected—Specimen from the Paris Catacombs—Typical Heads of the Human Race—Remarkable Indian Relics—“Flatheads”—The Work of Indian Arrows—An Extraordinary Story—A “Pet” Curiosity—A Japanese Manikin—Tattooed Heads—Adventure of Captain John Smith—A “Stingaree”—The Microscopical Division—Preparing Specimens, 475 CHAPTER XLIV. “OLD PROBABILITIES’” WORKSHOP—HOW WEATHER CALCULATIONS ARE MADE. “Old Probabilities”—An Interesting Subject—The Weather Bureau—The Experience Of Fifty Centuries—Foreseeing the Approach of Storms—The Fate of the _Metis_—Quicker than the Storm—The First Warning by Telegraph—Exchanging Reports with Canada—The “Observing Stations”—Protecting the River Commerce—The Signal Corps—The Examinations—The Sergeant’s Duties—The Signal-Stations—The Work of the Observers—Preparing Bulletins at Washington—Professor Maury’s Account—Safeguards Against Mistakes—Deducing Probabilities—Despatching Bulletins—Watching the Storm—The Storm at San Francisco—Prophetic Preparations—Perfect Arrangements—Training the Sergeants—General Meyer’s Work—An Extraordinary Mansion—The “Kites and Windmills”—Inside the Mansion—The Apparatus—“The Unerring Weather-Man”—“Old Probabilities” Himself—How Calculations are Made—“Young Probabilities”—Interesting Facts, 491 CHAPTER XLV. THE NAVY DEPARTMENT—THE UNITED STATES OBSERVATORY—THE STATE DEPARTMENT.