351 



If pints of this emulsion should be used in 3 gals, of water as required. 

 The " pitteleina de Berlese " and " rubina " are emulsions of tar in 

 caustic potash or soda, which are used in the proportion of 1 to 5 per 

 cent, for the former and 1 to 3 per cent, for the latter. " Antilles 

 liquid " is composed of 20 lb. of commercial powdered resin, 5 lb. of 

 caustic soda and 2h pints of fish oil, with water to make 100 gals. 

 The alkaline polysulphides of commerce are used in the proportion of 

 2 to 3 per cent, in water immediately after mixing, as they decompose 

 readily. 



Parmentier (P.). Les Maladies du Noyer. [Diseases of the Walnut.] 

 —Vie Agric. et Riir., Paris, vii, no. 22, 2nd June 1917, pp. 393-398. 



The insect pests of walnuts include : — The boring larvae of Taphro- 

 rhi/nchus {Boslrychus) bicolor and the Longicorn, Saperda scalar is, both 

 of which can be controlled only by pruning and burning the infested 

 branches on the spot ; Aphis jaglamlinis and Lachnus jnglandis 

 attack the young leaves, and the Coccid, Eulecanium (Lecanium) 

 jnglandis, forms galls on the twigs, and branches. 



The Lepidopterous pests include : — Dasychira (Orggia) padibunda, 

 Stauropas {Harpyia) fagi, Gracilaria. juglandella, Saturnia pyri, 

 Chematobia brumata, attacking the foliage, Cossus cossas {ligniperda) 

 and Zeuzera pyrina (aesculi), the larvae of which bore the branches, 

 and Cydia pomonella {Carpocapsa pomomana), the caterpillar of which 

 destroys the inside of the nuts. 



GuENAUX (G.). Traitements de Printemps et d'Et6 contre la Cochylis 

 et rEudemis. [Spring and Summer Treatments for Clysia ambi- 

 guella and Polychrosis botrana.] — Vie Agric. et Rur., Paris, vii, 

 no. 22, 2nd June 1917, pp. 397-398. 



The treatment recommended in spring is spraying with lead arsenate, 

 which must be replaced in summer, when the grapes are forming, by a 

 nicotine solution. The formula recommended for the latter is : — 

 Ordinary Bordeaux mixture 20 gals., titrated extract of nicotine 

 1^ pints, ordinary soap 4 lb. The Bordeaux mixture is composed of : 

 20 gals, water, 4 lb. copper sulphate, and 2 lb. of fat lime. The 

 nicotine solution is added to this and then the soap, previously dissolved 

 in a little warm rain water or ordinary water with the addition of 

 about 1 oz. soda. This mixture must be used the day it is made. 

 Barium chloride may be used instead of the nicotine according to the 

 formula : — 2 to 4 lb. barium chloride, 4 lb. molasses and 20 gals, water. 

 The barium chloride is dissolved in 2 gals, water, and the molasses is 

 dissolved in an equal quantity ; these are mixed and water added up 

 to 20 gals. 



Autumn and winter treatments include the decortication of the 

 stock, hot- water treatment and spraying with insecticides. 



Desinfection des V6g6taux par les Fumigations d'Acide Cyanhydrique. 



[Fumigation of Plants with Hydrocyanic Acid Gas.] — -Vie Agric. 

 et Rur., Paris, vii, no. 22, 2nd June 1917, pp. 399-400. 



Insecticide fumigation of imported plants, together with inspection 

 at the frontier, should serve to protect a territory from the introduction 



