468 
INDEX. 
Wheeler, G. 0.,- Phototropism of Land 
Snails, 180 
Wheeler, W. M., Beetles and Bugs in 
Tachigalia petioles , 1 80 
— Tachigalia Ants, 181 
Whitaker, Edith S., Investigations on 
Birch and Oak, 194 
Whitehead, Henry, British Fresh-water 
Triclads, 290 
Whitehead, T., Onion Smut, 213 
Whiteley, J. H., Formation of Globular 
Pearlite, 222 
Wiemann, H. L., Transplanting Part of 
Neural Tube of Larval Amblystoma, 
171 
Wilke, Emil, Fat-cells, Salivary Glands, 
and Malpighian Tubules in Tentbre- 
dinid Larvae, 54 
Willaman, J. J., and W. M. Sandstrom, 
Biochemistry of Plant Diseases, 333 
Willey, A., Arctic Copepoda in Passama- 
quoddy Bay, 286 
Williams, J. L., Gametophytes and Fer- 
tilization in Laminaria and Chorda, 
83 
— Laminaria and Chorda, 420 
Williams, R. S., West Indian Mosses, 313 
Willows, R. S., Precipitation of Disperse 
Systems, 98 
Wojnowica graminis on Wheats in the 
United States, 334 
Wolf, Frederic A., Leaf-spot Disease of 
Tobacco, 333 
Woodhead, Sir German Sims, Death of, 
164 
Woodruff, Lorande Loss, Paramoecium 
calkinsi sp. n., 189 
aurelia, 190 
— and Hope Spencer, Spathidium spatula, 
191 
Woods Hole Laboratory, 317 
Wormald, H., Discomycete on Medlar 
Fruits, 432 
Wright, F. E., Dispersion in Optical 
Glasses, 94 
— Certain Relations between Chemical 
Composition and Refractivity in 
Optical Glasses, 94 
X 
Xanthorise, Swedish, 92 
Y 
Yamada, K., Magnetic Separation of the 
Lines of Iron, Nickel and Zinc, 
95 
Yasuda, Atsushi, New Japanese Lichen 
Species, 215 
Yatsu, Naohide, Parabiosis in Rats, 
175 
Yeast, Longevity of certain Species of, 
210 
Yeasts, Hansen’s Curve for the Spolia- 
tion of, 86 
Yendo, K., Marine Algae. I. Porphyra, 
202 ' 
— Germination and Development of some 
Marine Algae II. Pliyllitis, 206 
York, H. H., and W. H. Snell, Infection 
of Pinus Strobus with Cronartium 
Bibicola, 326 
Z 
Zahlbruckner, A., New Lichens, 92 
Zanfrognini, Carlo, Lichens of Somalia, 
432 
Zeleny, Charles, Mutations in Bar-eye 
Series of Drosophila melanogaster , 
180 
Zeller, S. M., Chytridiaceae on Codium 
mucronatum, 424 
— Rhizopogon diplophloeus in Washing- 
ton, 427 
— and Abigail Neikirk, Gas Exchange in 
the Pneumatocyst of Nereocystis 
Luetheana (Mertens) P. & R., 205 
<- C. E. Owens, European Canker on 
the Pacific Slope, 212 
Zillig, Hermann, Distribution of the 
Anther Smut ( Ustilago violacea ), 
87 
Zimmermann, Arnold, Vinegar Eels, 
60 
Zinn, J., Germination of Grass-Fruits, 
410 
Zweibaum, Juljusz, Conjugation in Para- 
moecium, 190 
— Production of Reserve Material after 
Conjugation, 190 
Zygnemales, 201 
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