- Course of light in telescope from star to focus
For direct photography or visual observations at the focus of the 72-inch mirror, the reflected cone of star light from the mirror B, is intercepted by a plane mirror also silvered on the front surface, 19·5 inches diameter and 3·25 inches thick placed at 45°. This form of reflecting telescope was first used by Newton, hence the name. The focus is then formed, as shown, at the side of the tube, and if a plate is placed there and accurately guided by small eyepieces with cross wires, photographs of any desired small region in the sky can be obtained, or visual observations may be made. The oculars can easily be reached from the observing platform for any position of the telescope. - The Dominion Astrophysical Observatory - from the south
- Abraham Lincoln
Abraham Lincoln - Abraham Lincoln
Abraham Lincoln - The Monitor, the famous little ship that revolutionized warship design
The upper figure is a broadside view, the lower one a transverse section amidships. The upper portion of the hull was very like a raft, and was heavily armoured all over, as was the turret and the little pilot-box forward. - Plaid and figured material for slender figures
- Lingerie for the graduation dress
- Simple designs for taffeta street dresses
- Appropriate School Dresses
- Jumper dresses for the very young high school girl
- Good lines for stout figures
- Envelope and knickerbocker chemise
- (No. b 828) Organdy Graduation Dress (No. b 826)
- (No. B 824) Organdy Graduation Dress (No. B 833)
- (No. B 820) Organdy Graduation Dress (No. B 822)
- The right Honourable Ferdinand--Lord Fairfax
- The English Antick
- Sir Thomas Orchard, Knight
- Ninon de l'Enclos
- Robert Devereux
- Mrs. William Clark
- Mr. Alderman Abell and Richard Kilvert, the two maine Projectors for Wine, 1641
- Mayor Rip Van Dam
- John Lilburne
- Lady Anne Clifford
- James, Duke of York
- Herbert Westphaling, Bishop of Hereford
- Figures from Funeral Procession of the Duke of Albemarle, 1670
- Cromwell dissolving Parliament
- Dr. William Slater. Cathedral Beard
- City Flat-cap worn by 'Bilious' Bale
- Campaign, Ramillies, Bob, and Pigtail Wigs
- An Embroidered Jerkin
- A Woman's Doublet. Mrs. Anne Turner
- A Puritan Dame
- William, Prince of Orange
- Howe's First Sewing Machine
- Faneuil Hall, Boston, Adjoining Quincy Market
- Jonathan and his Uncle William in the One-horse Chaise
- Lock Stitch (above) and Chain Stitch (below)
- Cheapside in London
- Howe's Improved Sewing Machine
- Dom Pedro II
- Elias Howe
- Bell's Telephone in March, 1876
- Part of a Telephone Exchange
- Alexander Graham Bell in 1900
- Stock Indicator or 'Ticker'
- Wellesley College in 1886
- Edison's First Phonograph
- Edison in his Library
- Birthplace of Charles Goodyear
- Natives Drying Rubber
- Tapping a Rubber Tree
- Kitchen in which Goodyear made his Experiments
- Charles Goodyear
- Daniel Webster
- A Monk Copying Manuscript Books
- Franklin's Printing Press