460 



crop rotation, and the use of weevil-proof barriers [R.A.E., A, ix, 130]. 

 The habits of 0. sulcatits, F. (black vine weevil) and 0. riigifrons, Gyll., 

 are similar to the above, and the same remedial measures may be 

 applied. 



Notes are also given on the life-histories of, and remedial measures 

 for, Aristotelia fragariae, Busck (strawberry crown-miner), Polyphylla 

 decemlineata, Say (western ten-lined June beetle) and Aegeria {Synan- 

 thedon) nUilans, Hy. Edw. (strawberry crown moth). 



Vermorel (V.). Les Bouillies mouillantes et adherentes. — Progres 

 Agric. et Vitic, Montpellier, Ixxviii, no. 28, 9th July 1922, p. 37. 



The wetting and adhesive properties of alkaline Bordeaux mixtures 

 may be increased by the addition of i-| lb. of casein to every 

 100 gals, of mixture, or skimmed milk at the rate of one part to 100. 



Acid and copper mixtures may be improved by the addition of 

 gelatine or glue, a liquid form of the latter being the most suitable 

 substance. To prepare it 10 lb. of glue (cake) is soaked in cold water, 

 and then dissolved in 1 gal. of boihng water over a slow fire ; 5 lb. of 

 zinc chloride, which will prevent the glue from solidifying when cold, 

 is then added. These proportions are sufficient for 100 gals, of mixture. 

 Gelatine should be used at the rate of f-i lb. to 100 gals. 



Summary of the Programme of the Swedish State Institute of Experi- 

 mental Forestry for the Period 1922-26.— ilft-^^. Stat. Skogs- 

 forsoksanst., Stockholm, xix, no. 1, 1922, pp. 75-78. [Also in 

 Swedish and German.] 



The new investigations planned for the entomological section are the 

 preparation of reliable methods of collecting the insects living in the 

 ground, and the investigation of the fauna in certain types of forest 

 with a comparison between clearings and undisturbed stands. 



Work on injuries to forest trees by insects is being continued, 

 especially : Investigations on pine beetles [Myelophiltis spp.] in general, 

 wdth studies on the influence of bark removal on their occurrence in 

 wood cut in winter ; observations on the effect of injuries in the crowns 

 on' the growth of affected trees ; studies of the distribution, biology 

 and importance of bark-beetles in different parts of Sweden ; studies 

 of the development of the spruce bark-beetle [Ips typographits] ; 

 experiments with different methods of preparing trap-trees, and the 

 effect of variations in the time of cutting them ; investigations on 

 insects injurious to spruce and pine cones, with special attention to 

 the cone fauna in summer, and experiments in killing the larvae of the 

 spruce cone moth [Dioryctria abietella] by hydrocyanic acid ; and 

 studies of the insects occurring after forest fires, with a view to 

 ascertaining the danger of burnt forests being centres of infestation 

 and the possibihty of treating the slightly damaged trees so that the 

 deterioration due to borers may be prevented. 



Jack (R. W.). Notes from the Entomological Branch. — Rhodesia 

 Dept. Agric, Salisbury, Bull. 425, June 1922, 8 pp., 4 plates. 



• Very little is known about the life-history of Apophyllia murina, 

 Gerst., a leaf-eating beetle that infests maize. The larvae feed on the 

 underground stems, thereby reducing the value of the cobs. 



Larvae collected in January produced adults 19 days later. There 

 is probably more than one brood a year. Adults have been bred in 



