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STELLT7AAG, F. (1564) 
1920. ARSENIC PREPARATIONS AGAINST PESTS OP VINES AND FRUIT TREES. 
Ztschr. Angew. Snt . 7 (1): 172-180. [In German. Abstract in Rev. Appl 
Eat. (A)' 9: 2-3. 1921.] 
In 1917 the supplies of nicotine were just sufficient to spray 
'against the first generation of the vine moths (Cl vsia ambiguella and 
Polych rosis botrana ); and vine growers resorted to arsenical s against 
. the second generation with great success and without untoward conse- 
quences. 
„. (1565) 
1920. REPORTS ON THE OCCURRENCE AND CONTROL OE INSECT PESTS OE VINEYARDS 
IN 1918 AND 1919. Ztschr. Angew. Ent. 7 (l): 192-196. [In German. 
Abstract in Rev. Appl. Ent. (A) 9: 4. 1921.] 
In 1918 the second generation of the vine moths ( Clvsia a mbi^uella 
and Polychrosis botrana ) was combatted with arsenicals, nicotine having 
been used against the first generation. Mites ( Phyllocoptes and Eoi_- 
trimerus vitis Nal.) were treated with nicotine-soap in the spring with 
satisfactory results. 
ANONYMOUS (1566) 
1921. AGAINST VINE MOTHS. Riv. Agr. [Parma] 26 (17): 241-242, April 29. 
[In Italian. Abstract in Rev. Appl. Ent. (A) 9: 342. 1921.] 
The best treatment against vine moths, ( Clysia ambiguella. and 
Polychrosis botrana ) , consists in a spray of lead arsenate before 
flowering and one or two of nicotine after flowering for the second 
gene ra.t ion. 
MULLER-THUEGAU, H. (1567) 
1921. THE USB OE LEAD ARSENATE AGAINST THE FIRST AM SECOND GENERATION 
OF C_L; r ? IA ,::^IGU;-,LA AND POLYCHROSIS BOTE V'A. Schwelz. Ztsohr. Obst. 
u. "einbau 30 (13): 198-200. [Abstract in Rev. Appl. Snt. U) 9: 427. 
1921 . 1 
Lead arsenate should be used only for spring spi'aying against vine 
moths and should be prohibited in July and August on the bunches. Nico- 
tine which is the substitute in the later work has many disadvantages; 
it delays ripening and tends to impart a. dis.agreea.ble flavor. 
SCHELLENBSRG, A. (1568) 
1921. A REPORT ON A TOUR OF STUDY IN THE GERMAN VINE-GROWING REGIONS. 
Landw. Jahrb. Schweiz, [Lucerne] 35 (6): 725-754, illus. [in German. 
Abstract in Rev. Appl. Ent. (A) 10: 185. 1922.] 
