ClipArt ETC
"Hruschka's extractor, first brough to public notice in 1865, may be said to have revolutionized the bee-industry as a business. It enabled the honey producer to increase his output considerably by extracting honey from the cells in most cleanly fashion without damaging the combs, and in a fraction of the time previously occupied in the draining." — The Encyclopedia Britannica, 1910

Hruschka Extractor

"Hruschka's extractor, first brough to public notice in 1865, may be said to have revolutionized the…

"A lady's bicycle with gear-case and dress-guard. The rear frame of the "diamond" type is subjected to very small stresses due to vertical load. The front fork and steering post are subject to bending moment due to the reaction from the ground." — The Encyclopedia Britannica, 1910

Womans Bike

"A lady's bicycle with gear-case and dress-guard. The rear frame of the "diamond" type is subjected…

"An egg, four larvae, and two pupae of the honey bee in their cells." —Davison, 1906

Bee Larva

"An egg, four larvae, and two pupae of the honey bee in their cells." —Davison, 1906

Longitudinal section of bone, a microscopic view. 1: Cells; 2: Canals; 3: Intercellular substance.

Bone Section

Longitudinal section of bone, a microscopic view. 1: Cells; 2: Canals; 3: Intercellular substance.

Cross-section of bone, a microscopic view. 1: Cells; 2: Canals; 3: Intercellular substance.

Bone Section

Cross-section of bone, a microscopic view. 1: Cells; 2: Canals; 3: Intercellular substance.

Cluster of air-cells. 1: End of Bronchial Tube; 2: Air cell.

Air-Cells

Cluster of air-cells. 1: End of Bronchial Tube; 2: Air cell.

Forms of nerve-cells.

Nerve-Cells

Forms of nerve-cells.

Element of Nervous System. a: Sensory fiber; b: Motor fiber; c: Center; f: End of sensory fiber; m: muscle.

Nervous System

Element of Nervous System. a: Sensory fiber; b: Motor fiber; c: Center; f: End of sensory fiber; m:…

A name given to the plate armor of the leg below the knee.

Bainberg

A name given to the plate armor of the leg below the knee.

Nerve cell from the brain; <em>a</em>, processes by which it communicates with other cells near by; <em>ax</em>, long process or axis cylinder terminating in the tail end of the spinal cord; <em>n</em>, nucleus.

Nerve Cell

Nerve cell from the brain; a, processes by which it communicates with other cells near by;…

Lath tree guard

Guard

Lath tree guard

Wire and post tree guard

Guard

Wire and post tree guard

Ovarian tubes of one side, in <em>Polistes</em>, showing eggs in all stages of development, with nutritive cells, <em>nm</em>, between; <em>rs</em>, seminal receptacle; <em>ov</em>, oviduct; <em>vag</em>, vagina

Sexual Organ of Insects

Ovarian tubes of one side, in Polistes, showing eggs in all stages of development, with nutritive…

Mature but unopened archegonium. e, Ovum; b, ventral-canal cell; d, lid-cells of neck

Archegonia

Mature but unopened archegonium. e, Ovum; b, ventral-canal cell; d, lid-cells of neck

Riccia. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section. The cells which will produce the sporogenous tissue are shaded.

Bryophyta

Riccia. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section. The cells…

Marchantia morpha. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section. The cells which will produce the sporogenous tissue are shaded.

Bryophyta

Marchantia morpha. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section.…

Pellia epiphylla. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section. The cells which will produce the sporogenous tissue are shaded.

Bryophyta

Pellia epiphylla. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section.…

Anthoceros laevis. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section. The cells which will produce the sporogenous tissue are shaded.

Bryophyta

Anthoceros laevis. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section.…

Cephalozia bicuspidata. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section. The cells which will produce the sporogenous tissue are shaded.

Bryophyta

Cephalozia bicuspidata. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section.…

Radula complanaia. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section. The cells which will produce the sporogenous tissue are shaded.

Bryophyta

Radula complanaia. Semi-diagrammatic figure of a young embryo of Liverworts in longitudinal section.…

Marchantia polymorpha. Air-chamber with the filaments of assimilating cells and stoma in vertical section

Bryophyta

Marchantia polymorpha. Air-chamber with the filaments of assimilating cells and stoma in vertical section

Funaria hygrometrica. Part of a developed protonema. h, Creeping filament with brown walls from which the filaments of chlorophyll-containing cells

Bryophyta

Funaria hygrometrica. Part of a developed protonema. h, Creeping filament with brown walls from which…

Stamen of Pentstemon pubescens; the two-anther-cells diverging, and almost confluent.

Stamen of Pentstemon

Stamen of Pentstemon pubescens; the two-anther-cells diverging, and almost confluent.

Stamen of Mallow; the anther supposed to answer to that of Pentstemon pubescens, but the cells completely confluent into one.

Stamen of Mallow

Stamen of Mallow; the anther supposed to answer to that of Pentstemon pubescens, but the cells completely…

Stamens of the mint family. Of a Monarda: the two anther-cells with bases divergent so that they are transverse to the filament, and their contiguous tips confluent, so as to form one cell opening by a continuous line. Fig 301; Of a Calamintha: the broad connective separating the two cells. Fig 302; Of a Sage (Salvia Texana; with long and slender connective resembling forks of the filament, one bearing a good anther-cell wholly wanting. Fig 304; Of a White Sage, Audibertia grandiflora; the lower fork of connective a mere vestige. Fig. 305; Of another White Sage (A. stachyoides), the lower fork of connective suppressed.

Stamens

Stamens of the mint family. Of a Monarda: the two anther-cells with bases divergent so that they are…

Cells opening by a terminal hole.

Stamens of Pyrola

Cells opening by a terminal hole.

Cells of anther each opening by an uplifted valve.

Stamen of Barberry

Cells of anther each opening by an uplifted valve.

As it were of three grains or cells united; the lateral empty and light.

Pine Pollen

As it were of three grains or cells united; the lateral empty and light.

Figures to illustrate the earlier stages in the formation of an embryo; a single mass of protoplasm dividing into two, three, and then into more incipient cells, which by continued multiplication build up an embryo.

Formation of the Embryos

Figures to illustrate the earlier stages in the formation of an embryo; a single mass of protoplasm…

Diagram of a vegetable cell, such as it would be if when spherical it were equally pressed by similar surrounding cells in a heap.

Vegetable Cell

Diagram of a vegetable cell, such as it would be if when spherical it were equally pressed by similar…

Magnified view of a portion of a transverse slice of stem of Calla Lily. The great spaces are tubular air-channels built up by the cells.

Calla Lily

Magnified view of a portion of a transverse slice of stem of Calla Lily. The great spaces are tubular…

Magnified bit of a pine-shaving, taken parallel with the silver grain.

Pine-shaving

Magnified bit of a pine-shaving, taken parallel with the silver grain.

A large and a smaller dotted duct from Grape-Vine.

Grape-Vine

A large and a smaller dotted duct from Grape-Vine.

Spiral ducts which uncoil into a single thread.

Spiral Ducts

Spiral ducts which uncoil into a single thread.

Spiral ducts which tears up as a band.

Spiral Ducts

Spiral ducts which tears up as a band.

An annular duct.

Spiral Ducts

An annular duct.

Loose spiral duct passing into annular.

Spiral Ducts

Loose spiral duct passing into annular.

Scalariform ducts of a Fern; part of a bundle, prismatic by pressure.

Spiral Ducts

Scalariform ducts of a Fern; part of a bundle, prismatic by pressure.

Some magnified starch-grains, in two cells of a potato.

Starch-Grains

Some magnified starch-grains, in two cells of a potato.

Some cells of the albumen or floury part of Indian Corn, filled with starch-grains.

Indian Corn

Some cells of the albumen or floury part of Indian Corn, filled with starch-grains.

Four cells from dried Onion-peel, each holding a crystal of different shape, one of them twinned.

Onion-Peel

Four cells from dried Onion-peel, each holding a crystal of different shape, one of them twinned.

Some cells from stalk of Rhubarb-plant, three containing chlorophyll; two (one torn across) with rhaphides.

Rhubarb-plant

Some cells from stalk of Rhubarb-plant, three containing chlorophyll; two (one torn across) with rhaphides.

Rhaphides in a cell, from Arisaema, with small cells surrounding.

Rhaphides

Rhaphides in a cell, from Arisaema, with small cells surrounding.

Prismatic crystals from the bark of Hickory.

Prismatic crystals

Prismatic crystals from the bark of Hickory.

Glomerate crystal in a cell, from Beet-root.

Glomerate crystal

Glomerate crystal in a cell, from Beet-root.

A few cells of Locust-bark, a crystal in each.

Locust-bark

A few cells of Locust-bark, a crystal in each.

A detached cell, with rhaphides being forced out, as happens when put in water.

Detached Cell

A detached cell, with rhaphides being forced out, as happens when put in water.

Diagram of structure of Palm or Yucca.

Yucca

Diagram of structure of Palm or Yucca.

Structure of a Cornstalk, in transverse and longitudinal section.

Cornstalk

Structure of a Cornstalk, in transverse and longitudinal section.

A Palm-stem in transverse and longitudinal section, the dots on the cross sections represent cut ends of the woody bundles or threads.

Palm-stem

A Palm-stem in transverse and longitudinal section, the dots on the cross sections represent cut ends…

Short piece of stem of Flax, magnified, showing the bark, wood, and pith in a cross section.

Stem of Flax

Short piece of stem of Flax, magnified, showing the bark, wood, and pith in a cross section.

Piece of a stem of Soft Maple, of a year old, cut crosswise and lengthwise.

Piece of Stem from a Soft Maple

Piece of a stem of Soft Maple, of a year old, cut crosswise and lengthwise.

Magnified view of surface of a bit of young Maple wood from which the bark has been torn away, showing the wood-cells and the bark-ends of medullary rays.

Bit of Young Maple Wood

Magnified view of surface of a bit of young Maple wood from which the bark has been torn away, showing…

Magnified section of a leaf of White Lily, to exhibit the cellular structure, both of upper and lower stratum, the air-passages of the lower, and the epidermis or skin, in section, also a little of that of the lower face, with some of its stomates.

White Lily

Magnified section of a leaf of White Lily, to exhibit the cellular structure, both of upper and lower…

Small portion of epidermis of the lower face of a White-Lily leaf, with stomata.

White Lily leaf

Small portion of epidermis of the lower face of a White-Lily leaf, with stomata.

Small portion of epidermis of the Garden Balsam, showing very sinuous-walled cells, and three stomata.

Garden Balsam

Small portion of epidermis of the Garden Balsam, showing very sinuous-walled cells, and three stomata.

Two individuals of an Oscillaria.

Oscillaria

Two individuals of an Oscillaria.

Piece of stem of Sensitive Plant (Mimosa pudica), with two leaves. the lower open, the upper in the closed state.

Sensitive Plant

Piece of stem of Sensitive Plant (Mimosa pudica), with two leaves. the lower open, the upper in the…

Portion of stem and leaves of Telegraph-plant (Desmodium gyrans), almost of natural size.

Telegraph-plant

Portion of stem and leaves of Telegraph-plant (Desmodium gyrans), almost of natural size.

Plant of Dionaea muscipula, or Venus's Fly-trap.

Venus' Fly-trap

Plant of Dionaea muscipula, or Venus's Fly-trap.