834 EXPERIMENT STATION RECORD. 



insects noted. Cutting out the borers as soon as the vines begin to 

 show signs of injury and covering the bases of the vines with earth as 

 far as the third or fourth joint is suggested, and also capturing and 

 killing the moths which may be found sluggishly sitting on the leaves 

 in the evening and early morning. Spraying with arsenites is recom- 

 mended for the boreal ladybird. Kerosene emulsion or whale-oil soap- 

 suds is advised against the melon louse, and picking and destroying 

 the aft'ected leaves. Against the striped cucumber beetle it is sug- 

 gested that the hills be protected by covering them with screens or 

 nettings of some kind until the vines have acquired a strong growth, 

 and spraying Avith the arsenites, or dusting on tobacco dust, air-slacked 

 lime, or a mixture of arsenites and plaster after the beetles have begun 

 their attacks. 



Against the asparagus beetle applying lime to the affected beds is 

 recommended, and also cutting and burning the old stalks each fall 

 and the young seedlings in the spring. It is also suggested that 

 chickens be allowed to run among the beds. 



Report on a so called disease affecting the orange <jrchards of 

 Wide Bay, and on insect pests prevalent therein {Queensland 

 Dept. Agr. Bid. 4, 2d ser., -pp. 17). — This deals with investigations on 

 an affection of oranges called the "Maori orange," in which the fruit 

 was covered to a greater or less extent with a brown stain, frequently 

 obscuring the natural hue of the entire surface. The oranges were 

 usually exceptionally sweet and juicy, but sometimes were black, and 

 in this event the flesh was soft, discolored, and sour. The condition was 

 found to be j)roduced by the mite Phytoptus oleivorus, which fed upon 

 the rind of the orange, puncturing the oil cells, from which the oil 

 exuded and was oxidized by the atmosphere, thus producing a resinous 

 dark stain. Treatment by means of a sulphur, soap, and water wash, 

 or a spray of 2 oz. of iiotassium sulpliid dissolved in 2 gal. of soai)Suds 

 is recommended. This insecticide should be api)lied in the spring- 

 before the growth commences, again when the fruit is the size of a 

 marble, and later when it is about two thirds grown. 



Descriptive, life history, and remedial notes are given on the white 

 scale {Chionaspis citri), red scale {Aspidiotiis coccine us), hhiek scale {A. 

 ficus), long mussel sca'e [Mytilaspis (jJoverl), and 5 species of browu 

 scale {Lecanidcv). More persistent efibrt by fruit growers against 

 injurious insects is urged. 



Report of the entomologist, M. H. Beckwith {Delaware Sla.Ept. 

 1893. pp. 154-171., figs. 7). — This comprises a reprint of Bulletin 21 of 

 the station (E. S. K., 5, p. 410) and some additional matter. A report 

 is made of experiments with arsenites on several i)rivate farms to 

 ]>revent the depredations of the curculio, the trees being sprayed 

 with London purple, and the resulting fruit being almost entirely free 

 from insect injuries. In another ])rivate orchard an experiment was 

 conducted on 180 Abundance })Iuni trees to determine the relative 



