548 
INDEX TO VOLUME I 
Desiccation apparatus, 480 
Didymium melanospermum, cleavage in, 
127 
Disease control, the problems of, 107 
Disease, the non-parasitic, 106 
Distilled water, the harmful action of, 
255 
Distribution of plants, 194 
Dominance, 23 
Ecological adaptations of certain fern 
prothallia — Camptosorus rhizophyllus 
and Asplenium platyneuron, 477 
Ectotrophic mycorhizas, 54 
Edgerton, C. W. Plus and minus 
strains in the genus Glomerella, 244 
Embryo sac of Peperomia, 363; endo- 
sperm, 363 
Embryo sacs, abnormal, of Peperomia 
hispidula, 379 
Endothia parasitica, 499 
Endotrophic mycorhizas, 61 
Expulsion of ascospores, 516, 517 
Fagopyrum esculentum, 467 
Forest trees, mycorhizas of, 51 
Gall, notes on the anatomy of the puncta- 
tus, 530 
GoRTNER, R. A. and Harris, J. A. 
An axial abscission of Impatiens 
Sultani as the result of traumatic 
stimuli, 48 
Gliding growth and the bars of Sanio, 
522; in apple, 525 
Gloeosporium, a disease of the spice bush, 
340 
Gloeosporium officinale, 342 
Glomerella, plus and minus strains in, 244 
Glycocoll solutions, growth of plants in, 
174 
GoRMLEY, R. (see Dachnowski, A., 174) 
GoRTNER, R. A. (see Harris, J. A., 75) 
Green algae, new species of, 289 
Grossenbacher, J. G. Gliding growth 
and the bars of Sanio, 522 
Growth, gliding, 522 
Harper, R. A, Cleavage in Didymium 
melanospermum (Pers.) MacBr. 127 
Harris, J. A. On the correlation be- 
tween somatic characters and fertility 
H. Illustrations from Phaseolus vul- 
garis, 398; (see Gortner, R. A., 48) 
Harris, J. A. and Gortner, R. A. 
Notes on the calculation of the osmotic 
pressure of expressed vegetable saps 
and from the depression of the freezing 
point, with a table for the values of P 
for A = 0.001° to A = 2.999°, 75 
Heald, F. D. and R. C. Walton. The 
expulsion of ascospores from the 
perithecia of the chestnut blight 
fungus, Endothia parasitica, 499 
Heredity, 23 
Heterotrophic form of mycorhiza, 62 
HiGGiNS, B. B. Contribution to the 
life history and physiology of Cylindro- 
sporium on stone fruits, 145 
Impatiens Sultani, 48 
Johnson, D. S. Studies of the develop- 
ment of the Piperaceae. II. The 
structure and seed-development of 
Peperomia hispidula, 323, 357 
Jones, L. R. Problems and progress in 
plant pathology, 97 
Kunkel, L. O. Nuclear behavior in the 
promycelia of Caeoma nitens Burrill 
and Puccinia Peckiana Howe, 37 
Lamellae of Coprinus micaceus, origin 
and development of, 343 
Lepiota, comparison of veil of Agaricus 
with that of, 16 
Levine, M. The origin and develop- 
ment of the lamellae in Coprinus 
micaceus, 343 
MacDougal, D. T. The auxo-thermal 
integration of climatic complexes. 186 
McDougall, W. B. On the mycorhizas 
of forest trees, 51 
