A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z

Abdomen, 129.
Aberration, chromatic, 173.
Aberration, spherical, 172.
AcalephÆ, 153.
Acarus, 131.
Accumbent, 44.
Achromatic, 178.
Achromatic condenser, 5.
Achromatism, 177.
Acicular, 24.
Acotyledons, 43.
Acrocarpi, 55.
Acrostalagmus, 111.
Actinocyclus, 80.
Actinophrys, 156.
Adapter, 2.
Adulteration, 23.
Æcidium, 100.
Agaricus, 97.
Albumen, of seeds, 43.
——, of eggs, 113.
AlgÆ, 64.
Alyscum, 161.
Amoeba, 155.
Amphileptus, 162.
Angiocarpi, 94.
Angle of vision, 175.
Anguillula, 152.
Angular, 23.
Animal tissues, 113.
Ankistrodesmus, 74.
Annular vessels, 27.
Annulus, of Ferns, 50.
——, of Fungi, 98.
——, of Mosses, 55.
Anoplura, 135.
Ant, 143.
AntennÆ, of Entomostraca, 127.
Antennaria, 111.
Anthers, 37, 39.
Antheridia, of AlgÆ, 65.
——, of Ferns, 52.
Antheridia, of Mosses, 61.
Anthophysa, 160.
Antlia, 145.
Apex, 37.
Aphis, 146.
Apiculate, 101.
Aplanatic, 177.
Aplanatism, 176.
Apothecia, 92.
Apple-pulp, 19.
Apple, skin of, 41.
Arachnida, 130.
Arcella, 156.
Archegonia, of Ferns, 52.
——, of Mosses, 62.
Arcuate, 78.
AreolÆ, 116.
Areolar tissue, 116.
Arrow-root, 23.
Arteries, 114.
Articulata, 127.
Asci, of Fungi, 97.
——, of Lichens, 92.
Ascomycetes, 107.
Ash, 25.
Aspergillus, 106.
Aspidium, 50.
Astasia, 160.
Atropos, 145.
Bacterium, 86.
Balsam, garden-, 25.
——, Canada, 12.
Bark, 36.
Basidia, 98.
Bast, 26.
BatrachospermeÆ, 72.
Batrachospermum, 72.
Beards of Oyster, 125.
Bee, 143.
Beetles, 146.
Bermuda deposit, 81.
Bipinnatifid, 50.
Bivalve, 128.
Blood, 114.
——, of Birds, 119.
——, of Fishes, 121.
——, of Reptiles, 120.
Blood-corpuscles, 111.
Blood-worm (Chironomus), 143.
Blue-bottle, 137.
Blue mould, 106.
Bone, of Birds, 119.
——, of Reptiles, 120.
——, of Mammals, 114.
Bordered dots, 28.
Bothrenchyma, 28.
Botrytis, 105.
BranchiÆ, 125.
Bread, 23.
Bryozoa, 125.
Bryum, 59.
Buds, 47.
Bug, 145.
Bull’s-eye, 6.
Bunt, 102.
Butterflies, 144.
Cabbage-butterfly, 145.
Calicium, 94.
Calyptra, 55.
Calyx, 37.
Calcareous, 66.
Camera lucida, 18.
Campylodiscus, 78.
Canaliculi, 115.
Cancelli, 114.
Capillaries, 114.
Capillary, 69.
Carapace, 127.
Caraway, 41.
Carpels, 41.
Cartilage, 115.
Caterpillars, 145.
Cell-contents, 21.
Cell-formation, 29.
Cells, 19.
Cell-wall, 19.
Cellular tissue, animal, 116.
—— tissue of plants, 20.
Cement, 16.
Cephalothorax, 130.
CeramiaceÆ, 69.
Ceramidia, 66.
Ceramium nodosum, 69.
—— rubrum, 70.
Cercomonas, 159.
ChÆtomium, 110.
ChÆtophoraceÆ, 71.
Chara, 88.
Cheese-mite, 131.
Chelate, 131.
Chickweed, 37.
——, seeds of, 42.
Chilodon, 162.
Chin of Insects, 147.
Chironomus, 143.
Chitine, 136.
Chloride of calcium, 15.
Chlorococcum, 87.
Chlorophyll, 21.
Chrysalis, 141.
Chrysanthemum, 25.
Cilia, 52, 157.
Circulation in Plants, 31.
Cladonia, 93.
Cladophora, 71.
Classification, 164.
Clavarini, 99.
Clavate, 147.
Closterium, 74.
Coarse movement, 2.
Coccidia, 69.
Coccinella, 147.
Cocconeis, 79.
Cocoa-nut fibre, 26.
Coelenterata, 153.
ColeochÆte, 72.
Coleoptera, 146.
Coleps, 163.
Collomia, seeds of, 42.
Colpoda, 161.
Columella, of Mosses, 62.
——, of Mucor, 111.
Complementary colours, 183.
Compound animals, 126.
Concentric, 114.
Conceptacles, of AlgÆ, 65.
Conduplicate, 44.
Conferva bombycina, 71.
—— floccosa, 71.
ConfervaceÆ, 70.
ConfervoideÆ, 70.
Conidia, 100.
ConiferÆ, 26.
Coniomycetes, 99.
Conjugation, 73.
Continuous, 103.
Convolvulus, pollen of, 39.
Coral, 153.
Corallina, 66.
CorallinaceÆ, 66.
Corallines, 66.
Coremium, 106.
Corolla, 37.
Coscinodiscus, 81.
Cotton, 118.
Cotton-plant, 33.
Cotyledons, 43, 44.
Covers, 6.
Coxa, 139.
Crenate, 50.
Crocus, pollen-tubes of, 40.
CruciferÆ, 44.
Crustacea, 127.
Crustaceous, 91.
Cryptogamic plants, 48.
—— ——, seeds of, 43.
Ctenoid, 121.
Cucumber, 42.
Culex, 141.
Culm, 34.
Cuneate, 79.
Cup-moss, 93.
CurculionidÆ, 149.
Cycloid, 121.
Cyclops, 128.
Cypris, 128.
Dacrymyces, 99.
Daphnia, 129.
Dasya, 68.
Day-flies, 145.
Deal, 26.
Delesseria, 69.
Dematiei, 104.
DesmidiaceÆ, 73.
Diamond-beetles, 149.
Diaphragm, 3.
Diatoma, 78.
DiatomaceÆ, 75.
——, fossil, 82.
——, markings on, 81.
——, preparation of, 82.
Dichotomous, 67.
Dicotyledons, leaves of, 35.
——, seeds of, 43.
——, stems of, 35.
Dicranum, 57.
Differentiation, 47.
Dimidiate, 55.
Dinobryina, 160.
Dinobryon, 160.
Dioecious, 38.
Dipping-tubes, 4.
Diptera, 137.
Dispersion, 178.
Division, spontaneous, 159.
Dothidea, 108.
Dragon-flies, 145.
Draparnaldia, 71.
Dry rot, 98.
Ducts, 27.
Dung-beetle, 132.
Dytiscus, 148.
Eccremocarpus, seeds of, 42.
Echinodermata, 153.
Echinus, 153.
Elbowed, 149.
Elder, 25.
Elements, vegetable, 19.
Elytra, 147.
Emarginate, 146.
Embryo, 42.
Embryo-sac, 46.
Embryonal vesicles, 46.
Enchelys, 161.
Encysting, 159.
Endogenous, 29.
Endogens, leaves of, 35.
——, seeds of, 44.
——, stems of, 44.
Enteromorpha, 87.
Entomostraca, 127.
Entozoa, 151.
Ephemera, 145.
Epidermis, animal, 117.
——, vegetable, 31.
Epithemia, 77.
Equisetum, 34.
Erector, 5.
Erysiphe, 110.
Euglena, 160.
Excipulum, 92.
Excurrent, 57.
Exogenous, 29.
Exogens, leaves of, 35.
——, seeds of, 43.
——, stems of, 35.
Eye-pieces, 4, 179.
Eyes, compound, 138.
Facets, 138.
FavellÆ, 70.
Feathers, 119.
Feathery, 127.
Femur, 139.
Ferns, 49.
——, reproduction of, 51.
Fertilization, 45.
Fibro-cellular tissue, 25.
Fibro-vascular tissue, 31.
Field, 7.
Filament, 37.
——, flagelliform, 144.

Mould of paste, 111.
Moulds, 96.
Mounting, 10.
Mouth of insects, 147.
Mucedines, 105.
Mucor, 111.
Muscles, 115.
Mushroom, 97.
Mustard and cress, 43.
——, cotyledons of, 44.
Mycelium, 96.
Myriapoda, 133.
Nacre, 123.
Nassula, 162.
Needles, mounted, 4.
Nemaspora, 100.
Nerves, of leaves, 31.
Neuroptera, 145.
Newt, 120.
Nicol’s prism, 6, 184.
Nitella, 88.
Nitzschia, 78.
Nodding, 59.
Nodule, 79.
Nostoc, 86.
Nucleolus, 21.
Nucleus, 21.
——, of Infusoria, 159.
——, of ovule, 45.
Oak-apple, 111.
Oat, 23.
Object-glasses, 2.
Oblique, 30.
—— light, 9.
Obovate, 57.
Obtuse, 50.
Ocelli, of Spiders, 130.
Oidium, 105.
Opegrapha, 94.
Operculum, 55.
Optic axes, 183.
Orange, rind of, 40.
Organs, vegetable, 31.
Oscillatoria autumnalis, 84.
—— nigra, 85.
OscillatoriaceÆ. 84.
Ovary, of animals, 137.
—— of plants, 37, 40.
Ovate, 56.
Ovigerous vesicles, 154.
Ovisacs, 154.
Ovules, 45.
Ovum, 113.
Oxytricha, 161.
Oyster-shell, 123.
PaleÆ, 37.
Palmella, 88.
PalmellaceÆ, 87.
Palpi, of insects, 147.
Papilla, 39.
PapillÆ, of skin, 116.
Papillose, 39.
Paramecium, 161.
Paraphyses, 61.
Parenchyma, 20.
Parmelia, 91.
Pear, 29.
Pearls, 123.
Pectinate, 69.
Pediastrum, 74.
Pedicels, 103.
Pencil, 128.
Penicillium, 106.
Perianth, 37.
Pericarp, 40.
PerichÆtial, 60.
Peridiola, 110.
Peridium, 99, 100.
Perigonial, 61.
Perispore, 65.
Peristome, 55.
Perithecium, 107.
Petals, 37, 38.
Peziza, 107.
Phases, 184.
Phragmidium, 101.
Physarum, 99.
Physomycetes, 110.
Pigment, 117.
Pileus, 97.
PinnÆ, 51.
Pinnate, 51.
Pinnatifid, 50.
Pinnularia, 79.
Pinnules, 51.
Pistil, 37.
Placenta, 45.
Pleurenchyma, 26.
Pleurocarpi, 55.
Pleurosigma, 79.
Plocamium, 69.
Plumose, 127.
Plum-stone, 29.
Plumule, 43.
Podetia, 93.
Podophrya, 162.
Podura, 134.
Polariscope, 6.
Polarization of light, 180.
Pollen, 37.
Pollen-granules, 39.
Pollen-tubes, 40.
Polycystina, 156.
Polypi, 153.
Polypidom, 125.
PolypodiaceÆ, 50.
Polypodium, 50.
Polyporei, 99.
Polysiphonia, 68.
Polytrichum, 58.
Polyzoa, 126.
Polyzoary, 126.
Poppy, seeds of, 42.
Pore, 109.
Pores, in wood, 28.
Porous cells, 25.
Potato, 22.
Potato-fungus, 105.
Primine, 45.
Primordial utricle, 21.
Primrose, pollen of, 39.
Prismatic, 24.
Proboscis, 146.
Prolegs, 145.
Prosenchyma, 25.
Prothallium, 51.
Protoplasm, 21.
Protozoa, 155.
Pterodina, 151.
Puccinia, 101.
Puff-balls, 99.
Pulex, 135.
Pulvilli, 139.
Puncta, 79.
Pupa, 141.
Quadrate, 147.
Racodium, 111.
Radiata, 153.
Radicle, 43.
Ramenta, 49.
Raphides, 24.
Receptacles, of AlgÆ, 65.
——, of secretion, 40.
Red Spider, 132.
Reflexion, 169.
Refraction, 168.
Reindeer moss, 93.
Reproductive organs, 48.
Reptiles, 120.
Resting spores, 83.
Reticulated, 54, 129.
—— vessel, 27.
Rhabdonema, 80.
Rhinotrichum, 107.
Rhizome, 49.
Rhizopoda, 155.
RhodomelaceÆ, 67.
RhodospermeÆ, 66.
RhodymeniaceÆ, 69.
Rhubarb, 25.
Rice, 23.
Richmond earth, 82.
Rings, annual, 36.
Roe of fishes, 122.
Rootlets, 36.
Roots, 36.
Rostrate, 56.
Rostrum, 131.
Rotating disk, 6.
Rotation, 31.
Rotatoria, 149.
Rotifer, 150.
Rotifera, 149.
Sacculi, gastric, 158.
San Fiori deposit, 82.
Sarcode, 155.
Scalariform ducts, 49.
Scales, of fishes, 121.
——, of Podura, 134.
——, of insects, 144.
Scar of seeds, 46.
Scenedesmus, 74.
Schizogonium, 86.
Scolopendrium, 51.
Sea-weeds, 64.
Sections, 30.
Secundine, 45.
Seeds, 42.
Selenite, 24.
Sepals, 37.
Septa, 99.
Septate, 100.
Serrate, 51.
Sertularia, 154.
Sessile, 54.
Setaceous, 133.
SetÆ, 129.
—— of Infusoria, 158.
Shell, 122.
Side condenser, 6.
Silk, 118.
Simple microscope, 5.
Sines, 168.
SiphonaceÆ, 84.
Skin, 116.
Slides, 6.
Smut, 102.
Snapdragon, petals of, 39.
Snowberry, 42.
Sori, of Ferns, 50.
Spawn, of Fungi, 97.
Spectrum, 173.
Spermatia, 93.
Spermatozoa, of AlgÆ, 65.
——, of Ferns, 52.
——, of Fishes, 122.
——, of Mosses, 61.
Spermogonia, of Fungi, 101.
——, of Lichens, 92.
SphÆria, 109.
—— fragiformis, 104.
Sphagnum, 56.
Spicula, 157.
Spiders, 130.
Spiderwort, 31.
Spinnerets, 131.
Spiracles, 134.
Spiral cells, 25.
Spiral vessels, 27.
Spirit-lamp, 5.
Spirogyra, 72.
Spirulina, 85.
Sponges, 156.
SpongidÆ, 156.
Sporangium, of Ferns, 54.
Spores, 50.
Sporocybe, 104.
Sporophylles, 69.
Stage, 2.
Stamens, 37.
Starch, 22.
Starfishes, 153.
Stellate, 31.
Stems, 35.
Stentor, 163.
Sterigmata, 98.
Steropus, 146.
Stichidia, 68.
Stigma, 37.
Stilbacei, 103.
Sting, of Wasp, 144.
Stinging-organs, 154.
Stings, 33.
Stipes, 76, 97.
Stomata, 34.
Stomoxys, 141.
Striated, 33.
Stroma, 108.
Struma, 58.
Style of plants, 37.
Stylospores, 100.
Suctorial, 135.
Suture, 73, 76.
Synedra, 78.
Synura, 83.
Tabellaria, 79.
Tabular, 83.
Tangential, 30.
Tape-worm, 152.
Tarsus, 139.
Tentacles, 124, 153.
Testa, 42.
Tetraspores, 167.
Thalamium, 92.
Thallus, 91.
ThecÆ, 50.
Thorax, 129.
Thread-worm, 152.
Tibia, 139.
Tissues, vegetable, 19.
Toad-stools, 96.
Tongue, of Mollusca, 123.
Tortula, 57.
Torula, 100.
Tourmaline, 181.
Tous les mois, 24.
TrabeculÆ, 59.
TracheÆ, 134.
Trachelomonas, 160.
Tradescantia, 31.
Transverse, 148.
—— section, 30.
Tremellini, TAYLOR AND FRANCIS, PRINTERS, RED LION COURT, FLEET STREET.