Search Results
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Morse Alphabet and Numbers
- 1870 – 1900
Text and table detailing the Morse code alphabet and numerals used to communicate via telegraph.
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Handles and Needles of Telegraph
- 1870 – 1900
Illustration depicting the handles and needles used to operate a needle telegraph. One of the two main types of electromagnetic telegraphs, needle telegraphs use indicating needles moved electromagnetically as a means…
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Telegraph Wires and Insulator
- 1870 – 1900
Two illustrations depicting a general view of telegraph wires and a close-up view of the glass or porcelain insulator used to insulate the electrical wires.
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The Needle Telegraph
- 1870 – 1900
Illustration depicting a man using a needle telegraph. One of the two main types of electromagnetic telegraphs, needle telegraphs use indicating needles moved electromagnetically as a means of displaying messages.
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Medico-galvanic Battery
- 1870 – 1900
Diagram depicting a medico-galvanic battery, a type of portable shock-producing electrotherapeutic device commonly in use between 1870 and 1920. Such devices provided both direct and alternating current and were thought…
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Galvanometer
- 1870 – 1900
Illustration of a galvanometer, a device used to detect and measure small amounts of electrical current through the use of a magnetic needle or a coil in a magnetic field.
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Voltaic Pile
- 1870 – 1900
Illustration depicting a voltaic pile, the first electric battery invented by Alessandro Volta in 1800.
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386 items
Wonders of electricity and the elements, being a popular account of modern electrical and magnetic discoveries, magnetism and electric machines, the electric telegraph and the electric light, and the metal bases, salt, and acids
- 1870 – 1900
Educational volume covering a variety of topics related to electricity and the chemical elements in two parts. The first half of the volume is devoted to electrical and magnetic discoveries and modern electric machines,…
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Figure 44. Polyzoon. Figure 45. Section Through Brachiopod
- Part of Popular Zoology
- 1887
Figure 44 and 45 of the 1887 volume Popular Zoology. Figure 44 depicts a polyzoon with its tentacles expanded. Figure 45 depicts a cross-section view of a brachiopod, showing anatomical peculiarities.
Designed to give…
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Figure 36. Portion of Tape-worm
- Part of Popular Zoology
- 1887
Figure 36 of the 1887 volume Popular Zoology depicting a portion of a tapeworm sampled from a human being.
Designed to give students an understanding of the animal worlds, Popular Zoology describes and identifies the…
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Figure 76. Young Lobster
- Part of Popular Zoology
- 1887
Figure 76 of the 1887 volume Popular Zoology depicting a young lobster, showing the division of the body into head, thorax, and abdomen.
Designed to give students an understanding of the animal worlds, Popular Zoology…
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Figure 84. Pill-bug. Figure 85. Beach-flea
- Part of Popular Zoology
- 1887
Figures 84 and 85 of the 1887 volume Popular Zoology. Figure 84 depicts a pill-bug, also known as a woodlouse. Figure 85 depicts a beach-flea.
Designed to give students an understanding of the animal worlds, Popular…
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Figure 81. Nauplius of Barnacle (Magnified). Figure 82. Acorn Barnacle. Figure 83. Goose Barnacle.
- Part of Popular Zoology
- 1887
Figures 81, 82, and 83 of the 1887 volume Popular Zoology. Figure 81 depicts a barnacle (magnified) in the nauplius, i.e. first larval stage of development. Figure 82 depicts a trio of acorn barnacles. Figure 83.…
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Figure 101. Spring-tail (Enlarged)
- Part of Popular Zoology
- 1887
Figure 101 of the 1887 volume Popular Zoology depicting a springtail (enlarged).
Designed to give students an understanding of the animal worlds, Popular Zoology describes and identifies the animals in two kingdoms of…
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Figure 123. Larva. Figure 124. Buffalo-bug
- Part of Popular Zoology
- 1887
Figures 123 and 124 of the 1887 volume Popular Zoology. Figure 123 depicts the larval stage of a may-beetle or june-bug. Figure 124 depicts assorted views of a buffalo-bug.
Designed to give students an understanding of…
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Figure 150. Lamprey. Figure 151. Mouth of Lamprey
- Part of Popular Zoology
- 1887
Figures 150 and 151 of the 1887 volume Popular Zoology. Figure 150 depicts a lamprey with view of the nasal orifice. Figure 151 depicts the mouth of a lamprey.
Designed to give students an understanding of the animal…
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Figure 318. Skull of a Rodent
- Part of Popular Zoology
- 1887
Figure 318 of the 1887 volume Popular Zoology depicting the skull of a rodent.
Designed to give students an understanding of the animal worlds, Popular Zoology describes and identifies the animals in two kingdoms of…
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Limbs. Anterior Members of Vertebrata
- Part of Popular Zoology
- 1887
Illustration from the appendix of the 1887 volume Popular Zoology depicting limbs of a variety of vertebrate animal species, including humans, apes, whales, and birds.
Designed to give students an understanding of the…
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Figure 479. Monkey and Human Hands and Feet
- Part of Popular Zoology
- 1887
Figure 479 of the 1887 volume Popular Zoology depicting (a) the hand and foot of a monkey and (b) the hand and foot of a human.
Designed to give students an understanding of the animal worlds, Popular Zoology describes…
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Figure 87. Hermit-crab (Reduced). Figure 88. Zoea of Crab (Magnified)
- Part of Popular Zoology
- 1887
Figures 87 and 88 of the 1887 volume Popular Zoology. Figure 87 depicts a hermit-crab. Figure 88 depicts the zoea, i.e. larval stage, in the development of a crab.
Designed to give students an understanding of the…
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Figure 78. Fish-louse. Figure 79. Fresh-water Shrimp. Figure 80. Lepidurus couesii
- Part of Popular Zoology
- 1887
Figures 78, 79, and 80 of the 1887 volume Popular Zoology. Figure 78 depicts a fish-louse, with view of the grapple, neck, and egg masses. Figure 79 depicts a fresh-water shrimp, as it swims in the water. Figure 80…
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Figure 137. Female, Male, and Worker of Brown Ant. Figure 138. Ants at Varying Stages of Metamorphosis
- Part of Popular Zoology
- 1887
Figures 137 and 138 of the 1887 volume Popular Zoology. Figure 137 depicts female, male, and worker brown ants. Figure 138 depicts ants at varying stages of metamorphosis, including egg, larva, and pupa.
Designed to…
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Figure 129. Larva, Pupa, and Adult Clothes Moth. Figure 130. Tent Caterpillar
- Part of Popular Zoology
- 1887
Figures 129 and 130 of the 1887 volume Popular Zoology. Figure 129 depicts a clothes moth as larva, pupa, and adult. Figure 130 depicts a tent caterpillar as eggs, larva, and the imago stage of metamorphosis.
Designed…