The correct position when the pen is at the bottom of an extended letter below the line, the pen being,…
"The simplest and most generally practised form of budding is that called Shield budding or T-budding.…
"Take a tube bent like the letter U, and, having filled it with water, place a finger on each end, and…
The larynx viewed from its pharyngeal opening. The back wall of the pharynx has been divided and its…
Fissures and Lobes of the liver. There are 5 fissures of the liver, which are situated on the inferior…
Trime (3 cents) United States coin from 1851. Obverse has the Union shield lying on top of a six-pointed…
Pence (1 pence) Rosa Americana Series coin. Obverse has a right-facing image of George I surrounded…
Illustration showing the construction of a golden rectangle. Beginning with a unit square, a line is…
Illustration showing the golden rectangle. Two quantities are considered to be in the golden ratio if…
Illustration showing a nesting of 2 golden rectangles. Two quantities are considered to be in the golden…
Illustration showing a nesting of 3 golden rectangles. Two quantities are considered to be in the golden…
Illustration showing a nesting of 4 golden rectangles. Two quantities are considered to be in the golden…
Illustration showing a nesting of 5 golden rectangles. Two quantities are considered to be in the golden…
Illustration showing a nesting of 6 golden rectangles. Two quantities are considered to be in the golden…
Illustration showing a nesting of 7 golden rectangles. Two quantities are considered to be in the golden…
Illustration showing succession of golden rectangles that are used to construct the golden spiral. Two…
Illustration showing succession of golden rectangles that are used to construct the golden spiral. Two…
A piece of wood or metal to stamp a letter or character. "(1) the body, (2) the face, (3) the shoulder,…
Panama, Colombian Republic Stamp (1 centavo) from 1887-1889
Colombian Republic Insured Letter Stamp (50 centavos) from 1870
Tolima, Colombian Republic Insured Letter Stamp (10 centavos) from 1879
Bavaria Return Letter Stamp (value unknown) from 1865
A decorative border of envelopes, letters, and inkwells with four windows and banners for captions.