(135) 
Friekhinger, Hans Walter. Blausäurereicherung im Dienste der: Mehlschädlings- 
bekämpfung.. 2. Aufsatz. Bericht über eine vereinfachte Methode der Mühjen- 
räucherung. (Zeitschr. f. angewandte Entomol. IV [1917], p. 310—324, 3 Fig.) 
— Bekämpfung der Mühlenschädlinge mittels Blausäure. (Naturw. Wochenschr. 
N. F. XVII [1918], p. 710—714, 1 Fig.) 
Fromme, F. D. and Thomas, H. E. Black Root-rot of the Apple. (Journ. Agric. 
Research Washington X [1917], p. 163—173, Plates XV—XVIIL, 1 Textfig.) 
Fromme, F. D. and Wingard, S. A. Bean rust: its control through the use of resistant 
varieties. (Virginia Agric. Exp. Stat. Bull. Nr. 220 [1918] 1919, 18 pp. Pl. I--V.) 
Frost, S. W. Two species of Pegomyia mining the leaves of Dock. (Journ. Agric. 
Research Washington XVI [1919], p. 229—243, Pls.. XXVII—XXX.) 
Fulmek, Leopold und Stift, A. Über im Jahre 1917 erschienene bemerkenswerte 
Mitteilungen auf dem Gebiete der tierischen und pflanzlichen Feinde der Kar- 
toffelpflanze. (Centralbl. f. Bakt. usw. 2. Abt. LI [1920], p.. 315—336.) 
Fulmer, H. L. Influence of Carbonates of Magnesium and Calcium on Bacteria of 
Certain Wisconsin Soils. (Journ. Agric. Research Washington XII [1918], 
p- 463—504, 11 Textfigs.) = 
= Fulton, H. R. Decline of Pseudomonas Citri in the Soil. (Journ. Agric. Research 
= Washington XIX [1920], p. 107—223.) 
= Gardner, Max William. The mode of dissemination of fungous and bacterial diseases 
3 x of plants. (Rept. Michigan Acad. Sci. XX [1918], p. 357—423.) 
- Garman, H. and Hathaway, C. L. Treatment of seed wheat with formalin. (Circ. 
Kentucky Agric. Exp. Stat. XXII [1918], p. 23—27.) 
Gautier, Cl. Etudes physiologiques et parasitologiques sur les L&pidopteres nuisibles. 
La ponte des Apanteles, parasites de Pieris brassicae. (Compt. Rend. Soc. Biol. 
Paris Tome LXXXI [1918], p. 801-803.) R 
Gerhardt, Karl. Zur Theorie der Schutzmittel Be Tierfraß bei PRRENN (Biolog. 
Centralbl. XL [1920], p- ‚241—248.) 
Gertz, O0. Ett för Skandinavien neuer ce Perrisia ER F. Löw auf 
Silene acaulis L. (Svensk Bot. Tidskr. XIII [1919), p. 215—221, 4 Textf.) 
Giunti, M. Relazione sull’ opera della Scuola Viticoltura e di Enologia in Conegliano 
per la lotta contro le malattie delle piante. (Bollett. Minist. Agric. Roma XIII, 
II. Ser. B. [1914], p. 170—172.) 5 
Glaser, R. W. A new bacterial disease of Gipsy-Moth Caterpillars. (Journ. Agrie. 
Research Washington XIII [1918], p. 515—522, Pl. LIV.) 
i Gough, G. C. Wart disease. (Gard. Chron. III, LXIII [1918], p. 206, Fig. 90.) 
S Grandori, R. Risultati dei nuovi studi italiani sulla fillossera della Vite. (Milano 1914, 
XII 256pp. 17 Tav.) i 
"Grant, James. The destruction of En plantations. by squirrel, (Transact. Roy. - 
"Scottish Arboric. Soc. XXXIII [1919], p- 88.) ER 
Grassi, B. Il problema fillosserico nel momento attuale. (Boll. Soc. N ital. XVII 
[Roma 1914], p. 241-267.) 
 —— Ricerche fatte per’incarico del Ministero di Agricoltura intorno alla fuoriuscita 
dal terreno delle prime larve (neonate): della filossera della vite. (Boll. unse 
Agricolt. XIV, I. Ser. B. [Roma 1915], p. 3442.) 
Grassi, B. und Topi, M. Gibt es mehrere Reblaus-Rassen ? en R. Accad. 
Lincei Ser. V, Vol. XXVI, 1 Semestre [1917], p. 265—273.) 
Gravatt, G. Flippo and Posey, G.B. Gipsy-Moth Larvae as Agents in the Disseminatien 
of the White-Pıne Blister-Rust. BR Agric. Research ER XII [1918], 
EB: en ; ; 
