371 



flocculent lime soap itself, but to soluble traces of it (perhaps of a 

 colloidal natme). Soap solutions to which lime has been added are 

 more difficult to wash awaj^ after drying, than those without lime. 



Bekampfung der KartoKelnematode. [Measures against the Potato 

 Nematode.] — Nachrichtenbl. dcutschen Pflanzenschutzdienst, Berlin, 

 ii, no. 4, 1st April 1922, pp. 30-31. 



The government of Mecklenburg-Schwerin has issued an ordinance, 

 dated 24th January 1922, placing all potato-growing areas under 

 official supervision. All circumstances pointing to Nematode infesta- 

 tion must be reported to the local police. The export or sale of seed 

 or potatoes from infested areas is forbidden, and the growing of 

 potatoes is prohibited in such areas except by special permission. 



Hennemann (W.). Vogel als Blutlausvertilger. [Birds as Destroyers 

 of the Woolly Aphis.] — ■Nachrichtenbl. deutschen Pflanzcnschiitz- 

 dienst, Berlin, ii, no. 5, 1st May 1922, pp. 34-35. 



In recent years the woolly aphis [Eriosoma lanigerum] has increased 

 in the Lenne valley in Westphalia. Tits feed on this Aphid, but not 

 sufficiently to be of any great assistance to apple growers. 



ZiMMERMANN (H.). Oelkafer {Meloe proscarabaeus, L.) als Schadiger 

 von Rotklee. [M. proscarabaeus as a Pest of Red Clover.] — 

 NachricJitenbl. deutschen Pflanzenschutzdienst, Berlin, ii, no. 5, 

 1st May 1922, pp. 35-37. 



Serious damage was done to fields of red clover in Mecklenburg- 

 Schwerin in 1921 by a beetle, Meloe proscarabaeus, L. The beetles 

 were first noticed on 27th April and began to decrease about 20th 

 May. Individuals in captivity began ovipositing on 20th May. 

 The eggs began to hatch on 25th June, and the larvae died in about 

 ten days, after unsuccessful attempts to feed them had been made. 

 This appears to be the first record of M. proscarabaeus injuring clover. 

 The collection and destruction of the beetles seem to be the only 

 measure possible. 



Malexotti (E.). Mezzi agrari di Difesa contro gli Insetti ed altri 

 Animali dannosi in Agricoltura. [Agrarian Means of Defence 

 against Insects and other Animals harmful in Agriculture.] — 

 Reprint from L' Italia Agricola, Piacenza, 15th July 1920, 11 pp. 

 [Received 16th May 1922.] 



Attention is drawn to the value against agricultural pests of agrarian 

 measures, some of which are not actual cultural practices. They are 

 enumerated, a few of the insects concerned in each case being mentioned. 



Malexotti (E.). Gli altri fanno, e noi . . . stiamo a vedere. (A 

 Proposito della Mosca delle Olive.) [Others act, and we . . . 

 look on. A Note on the Olive Fly.] — Reprint from // Coltivatore, 

 Casale Monferraio, no. 33, 30th November 1921, 8 pp. [Received 

 16th May 1922.] 



This is a plea for a campaign on a large scale in Italy against the olive 

 fly [Dacus oleae] on the lines adopted in Greece [R.A.E., A, x, 3]. 

 The work in Greece is rendered possible by the fund raised by means 

 of a special tax on olives and olive oil, by a state subsidy, and by the 

 sale of material, apparatus, etc. 



(6782) 2 B 2 



