288 



entitled '' Diseases of the Mediterranean Orange," in which the Eust 

 Mite {Typhlodromus oleivorus), two species of Dactylopius, the Flat 

 Scale {Lecanium hesperidurn) and the Frnit Fly (Cerafitis cityq)erda)iiY& 

 specifically mentioned. Nothing new in the way of remedies, however, 

 is suggested. 



SPRAYIN& FOR THE CODLINQ MOTH. 



The effectiveness of spraying against the Codling Moth is shown by 

 the interesting results of a comparative test made by Mr. Waldo F. 

 Brown and quoted from the ^Te?/; York Tribune in the American Cultivator 

 for January 2, 1892. Mr. Brown carefully examined two trays of unas- 

 sorted apples, each containing 100, the fruit in one tray being taken from 

 a tree Avhich had been sprayed, and in the other from an unsprayed tree 

 adjoining. The apples were divided into three grades, first, second, 

 and third, No. 1 being perfect apples. No. 2 having one or two blem 

 ishes, and No. 3 being almost worthless. In the tray containing fruit 

 from the unsprayed tree there were 4 jDerfect apples, 58 second-class, 

 and 38 culls, while the tray filled from the sprayed tree contained 84 

 first-class, 9 second-class, and 7 culls. 



A NEW LOCALITY FOR ICERYA PURCHASI. 



Mr. J. W. Douglas announces in the Entomoloyisth Monthly Magazine 

 for December, 1891, that Mr. D. Morris, assistant director of the Eoyal 

 Gardens at Kew, has sent specimens of leery a purcliasi received from 

 St. Helena. They were found upon rose bushes which had been im- 

 ported from the Cape of Good Hope. Mr. Douglas positively recog- 

 nizes the species and recommends that the most strenuous exertions be 

 made to exterminate it at once. 



THE USE OF VASELINE WITH CARBON BISULPHIDE. 



Practice has shown that the bisulphide of carbon does not give so 

 satisfactory results in very siliceous earth as in others. 



Dr. Albin Meunier has been endeavoring to render this action uni- 

 form by assisting the diffusion of this substance in heavy soils and pre- 

 venting too rapid evaporation in those that are too light. 



The bisulj^hide was mixed with vaseline boiling at SoO^, which is 

 quite harmless to plants, even in large quantity. This diminished the 

 evaporation. Though the bisulphide can be separated from vaseline by 

 fractional distillation, on account of the great difference between the 

 boiling points, yet its evaporation at ordinary temperatures is consider- 

 ably diminished by the addition of vaseline, which retains consider- 

 able quantities for days in spite of a considerable surface of evapora- 

 tion. 



Five thousand seven hundred kilos of carbon bisulphide mixed with 

 vaseline were employed in the Department of the lihone in 1888 with 



