Vallentin, R., Anatomy of Stephanoceros

Eichhornii, 186.

Vallin, E., Hæmatozoa of malaria, 378.
Vallisneria spiralis, Demonstrating Cy-
closis in, 112.

Vampyrella, Anatomical Peculiarity of,
194.

Variations of Decapod Crustacea, 599.
Vascular Bundles of Dahlia, 736.
Vaucheria, Rotifer Parasitic on, 726.
Vaucheria-galls, 643.

Vayssière, A., Prosopistoma variegatum,
172.

The Genus Prosopistoma, 452.
Vegetable Cell, Processes of Growth in,
618.

Vegetables, Fresh, Micro-organisms of, 759.
Vegetative Axis, Branching of, 57.
Vejdovsky, F., New Land Planarian, 182.

G., Pachydrilus subterraneus, 180.
Velonovsky, J., Branching of Vegetative
Axis and Inflorescence, 57.
Venetian Turpentine as & Mounting
Medium, 258.

Vérick's Binocular Eye-pieces, 387.
Veronica, Pucciniæ parasitic on, 756.
Verschaffelt, E. and J., Transpiration,
632.

Verson, E., Biology of the Cell, 310.

-, New Excretory Organs in the Silk-
worm, 712.

-, Parthenogenesis of the Ova of
Bombyx, 594.

-, System of Integumentary Glands of
Bombycidæ, 320.

-, Wing of Lepidoptera and its "Imagi-
nal Disc," 320.
Vertebrates, Embryology of, 572.

Origin of, from a Crustacean like
Ancestor, 701.

from Arachnids, 702.
Verworn, M., Effect of Galvanic Current
and other Irritants on Protista, 405.
Vesque, J., Use of Anatomical Characters
in the Classification of Plants, 357.
Viala, P., "Pourridié" of the Vine, 493.
Vibrios, Increased Virulence of, 228.
Victoria, Natural History of, 313.
Zoology of, 704.

Vignal, W., Bacillus mesentericus vulga-
tus, 499.

Influence of the kind of Nutriment
of a Bacillus on the Diastase secreted by
it, 499.

Viguier, C., Tetraplatia volitans, 467.
Ville, S., Relation between the Physical
Characters of Plants and the Richness of
the Soil, 209.

Vine, Fertilization of, 208.

New Parasite on, 495.
"Pourridie" of, 493.

Vinegar, Nematodes in, 330.

Vines, S. H., Epinasty and Hyponasty, 63.

1890.

Voigt, A., Allium-oil, 351.

Volkens, G., Resinous Leaves, 742.
Volvox, 71.

Vorce, C. M., Bolting Gauze, 665.
Raphidodiscus, 78.

Vosmaer, G. C. J., Metamorphosis of
Sponge-Larva, 193.

Mode of Studying Free-swimming
Larvæ, 249.

Vosseler, J., Venetian Turpentine as a
Mounting Medium, 258.

Vries, H. de, Heredity of Torsion, 210.
Intracellular Pangenesis, 15.

Production of Colourless Spirit-
preparations, 251.

Vuillemin, P., Use of Micrography in
Botany, 486.

W.

Wager, H. W. T., Nucleus of Peronospora,

491.
Staining of Vegetable Nuclei, 533.
Wagner, K. E., Action of medicinal sub-
stances on growth of the bacillus of
tuberculosis, 500.

Wahrlich, W., Anatomical Peculiarity of a
Vampyrella, 194.

Wakker, J. H., Increase in thickness of
the Stem of Abrus precatorius, 55.
Peziza tuberosa, 75.

Waldeyer, W., Structure of the Placenta
in Man and Monkeys, 308.

Wales, North, Fresh-water Alga of, 277,

Warming, E., Podostemaceæ, 200.
Wasps, Sand-, 713.

Watase, G., Migration of Retinal Area in
Arthropods, 449.

S., Karyokinesis and Cleavage of
Ovum, 440.

Morphology of Compound Eyes

of Arthropods, 318.
Water, Conduction of, 63, 361.

Drinking, Bacteriological Examina-

tion of, in Christiania, 767.

-, Impurity of, Algae as a cause of,
489.

in Transpiring Plants, Cause of the
Movement of, 632.

in Wood, Conduction of, 63.
Sterilization of, by the Chamberland
Filter, 260.

The state in which it exists in Live
Protoplasm, 441.

—, Variations of, in the Perianth, 201.
Water-mite Parasitic on a Snail, 599.
Watson and Sons' Substages for Students'
Microscopes, 790.

Watson, A. T., Tube-building Habits of
Terebella littoralis, 685.

Wave growth of Corydalis sempervirens,
210.

Wax, Secretion of, in Bees, 321.

Webb, T. L., Dextrin as an Imbedding
Material for the Freezing Microtome,
113.

Webber, H. J., Peridium and Spores of
Uredineæ, 495.

Weber, —., Theory of Growth in Height,
631.

Weed, C. M., Studies in Pond Life, 172.
Weichselbaum, Researches on Influ-

enza, 773.

Weigert, C., New Neuroglia-staining, 411.
Weigert's Method, Simplification of, 115.
Weir, F. W., A new Diatom Mounting
Medium, 539.

Weismann, A., Paracopulation in Eggs of
Daphnids, 175.

Theory of Heredity, 153, 307.
Weldon, W. F. R., Variations of Decapod
Crustacea, 599.

Went, F. A. F. C., Formation of Vacuoles
in Algae, 640.

Reproduction of Codium, 643.
West, C. E., Early Binocular Instruments,
547.

W., Contribution to the Freshwater
Algae of North Wales, 277, 417.
West Indian Chalinine Sponges, 344.

Indies, Marine Algae of, 217.

Western, G.. Philodiua macrostyla and
Rotifer citrinus, 610.

Wetterwald, X., Leaves and Shoots of
Euphorbiaceae and Cactaceæ, 201.
Wettstein, R. R. v., Myrmecophilous Plants,
486.

Williston, S. W., New Cattle Pest, 171.
Wilson, E. B., Embryology of Earthworm,
327.

Study of the Embryology of the
Earthworm, 402.

-, H. V., Development of Serranus
atrarius, 439.

Hoplophoria coralligens, 338.
Winkel's (R.) Combination of Screw-
micrometer and Glass-micrometer Eye-
piece, 391.

Winogradsky, S., Organisms of nitrifica-
tion, 658.

Wistinghausen, C. v., Tracheal Endings
in Sericteria of Caterpillars, 450.
Wittrock and Nordstedt's Algae aquæ
dulcis, 218.

Wolf-spider and its Cocoon, 717.