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Self-division of cells; see Duplicative Sub-
Serous membranes, structure of, 604.
Shadbolt, Mr., on Arachnoidiscus, 290.
Shark, teeth of, 588, 589; scales, &c., of,
Shell, of Crustacea, 550, 551; of Echinida,
Roots, structure of, 386; mode of making Simple Microscope, principle of, 77-81;
sections of, 386-388.
Ross, Mr., on adjustment of object-glass,
his Compound Microscope, 108-
Rotation of fluid in Chara, 324; in cells of
Sable, hair of, 595.
Saw-flies, ovipositor of, 578.
Scalariform duc's of Ferns, 352, 353, 374.
Scales, of cuticle of Plants, 390.
of Fish, 591-593.
various forms of, 90-96.
Skin, structure of, 604, 605; papillæ of, 605-
of Insects, 556-561; their use as Sphagnum, peculiar cells of, 348, 349; oc-
of Reptiles and Mammals, 594.
Seeds, microscopic characters of, 401-403.
currence of Rotifer in leaf-cells of, 426.
Sphæroplea, sexual reproduction of, 318.
Spherical Aberration, 70; means of re-
Spiders, eyes of, 582; respiratory organs of,
Spinal Cord, mode of preparing sections of,
Spines of Echinus, &c., 479, 480; mode of
SPONGES, their structure, 452, 453; ciliary
Sporangia, of Desmidiacea, 274, 275;
Squirrel, hair of, 594, 595.
Stage, lever, 128, 129; magnetic, 130.
Star-Anise, cells of seed-coat of, 367, 368.
Stellate cells of Rush, 362; of water-lily,
Stemmata of Insects, 563.
Mode of making sections of, 386-
Stephanoceros, Eichornii, 433.
Thymus and thyroid gland, 664.
Tinea favosa, fungous vegetation of, 340.
Tissues, Elementary, of Plants, 360; cel-
Tongues of Gasteropods, 517-520; of In-
Trachea of Insects, 570-572; mode of pre-
Triceratium, 292; markings on, 281.
1 rout, circulation in young, 619.
Stomata of Marchantia, 345, 346; of Flow- Tubularida, 462, 463, 465.
ering Plants, 391, 392.
Suminski, Count, on development of Ferns,
Surirella, 293; conjugation in, 284.
Tadpole, pigment-cells of, 604, 605; mode
Tania, 529, 530.
Tardigrada, 435; desiccation of, 432.
Terebratula, structure of shell of, 513-515.
Test-Liquids, 212, 213.
Tetraspores of Florideæ, 331, 332.
Tubules, nervous, 614, 615.
TUNICATA, Compound. general organiza-
Unionida, shells of, 508-512.
Urns of Mosses, 350, 351.
Vacuoles, microscopic appearances of, 185.
Vaucher, his researches on Confervæ, 38.
Theca of Fungi, 334, 335; of Ferns, 352, Vegetable Ivory, 368.
Vegetable Cell, nature of, 248, 249.
Thin Glass, 214-216.
Thompson, Mr. J. V., on Polyzoa, 492; on
Thread-cells of Zoophytes, 474-476.
VERTEBRATA, elementary structure of, 585-
Vesicles of Nervous tissue, 614, 615.
Thread, glutinous. of spider's web, 582, 583. Vine disease, 342.
Volvox, structure of, 259, 260; develop-
Vomited matters, 698.
Vomit, black, 698.
Von Baer's law of development, 52.
Warington's Universal Microscope, 105-
Water-vascular system, of Rotifera, 429,
his observations on rotation,
Whalebone, structure of, 598.
Williamson, Prof., on Volvox, 261-265.
Winter-eggs of Rotifera, 431; of Hydra,
Wood, of Exogenous stems, 378-381.
Xanthidia of Flints, 633.
Yeast, a vegetable substance, 45; produc-
Yellow fibrous tissue, 603, 604.
Zoophyte-Trough, 149, 150.
Zoospores, formation of, by Ulvaceæ, 310,
BLANCHARD & LEA'S
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