488 
Clayton, E. E., The relation of tempera- 
ture of the Fusarium wilt of the Tomato. 
412 
D’Angremond, A., Bestrijding van Phyto¬ 
phthora Nicotianae in de Vorstenlan- 
den II. 223 
Duggar, B. M., and Karrer, Joanne L., The 
sizes of the infective particles in the mo- 
saic disease of tobacco. 127 
Funk, Georg, Zur Kenntnis der Keimlings¬ 
erkrankungen bei Koniferen. 221 
Eyer, R. J., Notes on the etiology and the 
specificity of the potato tip burn pro- 
duced by Empoasca mali Le Baron. 32 
Ezekiel, W. N., Some factors affecting the 
production of apothecia of Sclerotinia 
cinerea. 31 
Gard, M., Sur le deperissement des jeunes 
noyers en 1922. 383 
Gerhardt, K., Über die Entwicklung der 
Spirallockengalle von PemphTgus spiro- 
thecae an der Pyramidenpappel. 220 
Girola, Carlos, Sobre algmias enfermedades 
de la papa. 149 
—, Agallas de corona del duraznero (Pseu- 
domonas tumefaciens Erw. Smith et 
Townsend). 150 
Grintescu, J., Le noir des bles en Roumanie. 
149 
Hallberg, F., Notes on Indian Plant Tera- 
tology. 96 
Hauman, Lucien, Sobre un paräsito de las 
flores del Paspalum dilatatum. 148 
—, Sobre una curiosa deformacion del 
huesped causada por una Ustilaginea. 148 
—, y Parodi, Lorenzo R., Los paräsitos 
vegetales de las plantas cultivadas en 
la Repüblica Argentina. 150 
Hedicke, H., Die nomenklatorische Be¬ 
zeichnung von Cecidien mibekannter 
Erzeuger. 447 
Hemmi, T., Two Anthracnoses on Rhus 
Plants. 30 
—, On the Pathogenesis of Some Parasitic 
Fungi Causing the Anthracnose in Some 
Plants. 31 
—, Nachträge zur Kenntnis der Gloeo- 
sporien. 31 
Hintikka, T. J., Die Wisa-Krankheit der 
Birken in Finnland. 446 
Hoerner, G. R., Infection capabilities of 
crown rust of oats. 31 
Hungerford, Chas. W., The Relation of Soil 
Moisture and Soil Temperature to Bunt 
Infection in Wheat. 222 
Hurst, C. R., The relation of temperature 
and hydrogen-ion concentration to ure- 
diniospore germination of biologic forms 
of stem rust of wheat. 170 
Hy de, Karl C., Anatomy of a gall on Po- 
pulus trichocarpa. 220 
Jochems, S. C. J., De invloed von zwavel- 
koolstof op de kiemkracht van tabaks- 
zaad. 463 
Kaufman, C. H., and Kerber, C. M., A 
study of the white heartrot of locust, cau 
sed by Trametes robiniophila. 34( 
Kirby, R. S., The take-all disease of cereals 
and grasses. 5: 
Lafferty, H. A., and Pethybridge, G. K. 
On a Phytophthora parasitic on apples 
which has both amphigynous and para 
gynous antheridia; and on allied species 
which show the same phenomenon. 30; 
Lee, H. A., Relation of the age of citrus 
tissues to the susceptibility to citrus 
canker. • 12( 
—, H. Atherton, Relation of the age of Ci 
trus tissues to the susceptibility to Citrus 
canker. 4L 
Leonian, L. H., Stem and fruit blight oj 
peppers caused by Phytophthora cap 
sici sp. nov. 222 
Lo Priore, G., Teratologia sperimentale. 124 
Lutman, B. F„ The relation of the wates 
pores and stomata of the potato leaf tc 
the early stages and advance of tip burn, 
222 
Meier, F. C., Drechsler, Ch., and Eddy, E 
D., Black rot of carrots caused by Alter- 
naria radicina n. sp. 125 
Mizusawa, Y., A bacterial rot of the Saffror 
Crocus. 3C 
Morstatt, H., Bibliographie der Pflanzen 
Schutzliteratur. 127 
Nieschulz, 0., Unsere bisherigen Kenntnisse 
von der Flagellatenkrankheit der Pflan¬ 
zen. 221 
Nobecourt, P., Sur le mecanisme de l’action 
parasitaire du Penicillium glaucum Link 
et du Mucor stolonifer Ehrb. 175 
Palm, B. T., De Mozaiekziekte van de Tabak 
een Chlamydozoonose ? 53 
Pater, B., Eine neuere Abnormität von 
Digitalis purpurea L. 221 
Poole, R. F., SoTme recent investigations on 
the control of Sclerotinia libertiana in 
the greenhouse on the muck farms ox 
Bergen County, New Jersey. 31 
—, A new fruit rot of tomatoes. 223 
Pritchard, F. J., and Porte, W. S., Isaria rot 
of tomato fruits. 125 
Rauds, R. D., Streepkanker van Kaneel, 
veroorzaakt door Phytophthora cin- 
namomi n. sp. 340 
Romell, L. G., Hänglavar och tillväxt lios 
norrländsk gran. (Bartflechten und Zu¬ 
wachs bei der norrländischen Fichte.) 
413 
Savin, W. M., The workmanship of the 
leaf-cutting bee. 127 
Schilberszky, K., A szilvafak rozsdabeteg- 
segöt okozö gombak biologiäjaröl. (Zur 
Biologie der die Rostkrankheit der 
Pflaumenbäume erregenden Pilze.) 148 
Schmidt, E. W., Über die Voraussetzungen 
zu einer erfolgreichen Bekämpfung von 
Pflanzenkrankheiten. 447 
