145 



appearance, the yield of grapes the next season was better than for 

 the previous 20 years. The gas-tar method is therefore considered to 

 be both cheaper and safer than fumigation with sodium cyanide. 



Richards (J. M.). Mealy Bug on Vines. — Gardeners' Chronicle, 

 London, Ixiii, no. 1624, 9th February 1918, p. 60. 



Another method for the control of mealy bug [Pseudococcus] on 

 vines that has given good results is as follows : — After pruning the 

 vines, the houses should be thoroughly washed with carbolic soap and 

 boiling water, a wineglassful of parafhn being added to each bucketful. 

 The \"ines must then be scrubbed with very hot water, and all loose 

 bark scraped off on to sheets of paper, which must then be burnt. 

 Two more washings with nicotine soap and hot water are then given. 

 After drying, the stems are painted with a mixture of clay, nicotine, 

 soft soap and sulphur, of the consistency of paint, and the walls must 

 be treated with a mixture of hot lime and paraffin. 



Tl-llgren (Albert). Blyarseniat som Besprutningsvatska mot gnagande 

 Insekter. [Lead Arsenate as a Spraying Fluid against mandi- 



o 



bulate Insects.] — Sveriges Pomologiska Forenings Arsskrift, hafte 

 2, arg. 18, pp. 113-116, 3 figs. 



This paper gives an account of the properties and use of lead arsenate 

 •against Cydia pomonella, L., and Argijresthia conjugella, Zell. 



o 



TuLLGREN (Albert). Skadedjur i Sverige Aran 1912-1916. [Injurious 

 Animals in Sweden during 1912-1916.] — Meddelande fran Central- 

 anstalten for Jorsbruksforsok, no. 152 ; Entomologiska Avdelningen, 

 no. 27, pp. 104. 



The publication of these annual reports has been delayed for various 

 Teasons, so that the present one covers five years and briefly enumerates 

 about 350 species. It has been drawn up by the Entomological 

 Department of the Agricultural Experiment Station of Sweden in 

 cooperation with about 550 correspondents throughout the country 

 who send in regular reports concerning noxious insects. 



Forficula auricnlaria, L., damaged ornamental plants, as well as 

 barley, wheat and cabbage in various places. The withered heads of 

 grasses, such as Poa pratensis, Alojxcurus genicuhtus, PJileum pratense 

 and Festuca rubra, caused by thrips were very conspicuous in the 

 north of Sweden in 1916. Kakothrips pisivora {Physopus robustus, 

 Uzel), did great harm in Southern Sweden in 1912, reducing the crop 

 of peas by 60-75 per cent. 



Lygus spp. attacked Chrysanthemum indicum, the species most 

 commonly found being L. pabulinus, Mey., L. pratensis, L., and 

 L. canipestris, L. In the summer of 1914 severe attacks by Lygus sp. 

 were reported on turnips, potatoes, clover, etc. Typhlocyba rosae, L., 

 was observed in several localities, chiefly on roses, and was successfully 

 combated by spraying with quassia. In the south of Sweden Psylla 

 7nali, Schmbg., injured apjjle trees, spraying with carbolineum being 

 •effected against it, with complete success. Trioza alacris, Fl. (lauri, 

 Targ.) has been found on imported laurels on several occasions. 



